Diapers are socially acceptable here in Brazil. For Brazilians, diapers are a kind of underwear.
In Brazil you can wear speedos and bikinis on street at cities with beaches, like Rio de Janeiro, but it's only normal to wear those around the beach area. If you go far from the beach, like 3~4 streets into the neighborhood, you will not see people wearing beach outfit anymore.
In our culture, there is a difference between ordinary underwear (like briefs) and speedos and bikinis (beach outfit). It's not because of size, it's the attire purpose. You won't see people in underwear at beaches, it would be so weird, but you can see in a dressing room or during a medical procedure.
That being said, it's because diapers are underwear you will not see people in diapers at the beach or swimming clubs. But you can see someone in diapers in the dressing room at the gym just like other guys taking off or putting on their briefs. Even if you are in a soaked diaper, you don't need to bother going to a stall to take it off, everybody knows the purpose of a diaper. It's not the same for a messy diaper, of course. You won't put a clean diaper on just after taking off a messy diaper. You can take off your clothes outside the stall and go to the stall in a messy diaper carrying with you your wipes and the new diaper. People may do strange faces in that context, but I guarantee they will say nothing.
Fun fact about Brazil: on carnival you can walk around wearing diapers out in open in public wherever you go, because people see it as a costume. Because it's the cheapest costume, it's very popular, specially among men. It's also popular because if you decide to go to a party and there's no costume available, you can just go to a drugstore or supermarket and buy a diaper: you got your costume! During the days of carnival, you can see diapered guys everywhere, not only in the street parties. You see then at restaurants, supermarkets, banks, and even at the house of others if a party is happening there. So you can enter to any building diapered, take an elevator with others and nobody will judge you. Carnival in Brazil is the heaven for all exhibitionist diaper lovers. Go to Google Images, search for “fralda carnaval" and have fun!
Because diapers are socially acceptable here, I don't mind if people find I wear diapers. I wear 24/7 and attend everyday functions in diapers under my clothes. No one mention my diapers if noticed under my clothes. I wear Tena Slip during the day, everyday. They are super discreet and not noticeable at all. I'm wearing around my coworkers every day for the last 2 years and they didn't notice yet.
My family and close friends are aware that I have to wear diapers for medical reasons. I don't care about what other people think.
I feel naughty when taking off my wet diaper or pants in the dressing room at the gym. It's unconventional a guy is his early 40's being incontinent already and I have a lot of fun being out of the norm. When strange guys see me taking off my soaked diaper or drenched pants for the first time, they do a priceless look of amazed bewilderment, a mix of surprised and confused. The thrill of adrenaline/humiliation is amazing!
I love the embarrassment of being caught by strangers, but it's very difficult to make people notice I wear diapers. Even with a leaking diaper and a big bulge full of piss with wet spots in the crotch, no one has ever pointed, laughed or commented while I'm walking by their side. So I'm always creating situations where others can see my soaked wet diaper or pants. There are two situations it's certain I'll be amused with the expressions on the faces of strangers: letting they see me changing my fully wet diapers around them or answering the door for delivery guys wearing only a heavy sagging wet diaper.
Dressing rooms at gyms are the perfect place to change and being caught, but I've already exposed myself in public bathrooms everywhere it's possible, like in malls, supermarkets, gas stations, bus stations, libraries, airports, restaurants, grocery stores, parking lots, wherever. And I don't know how many times I've answered the door for delivery guys wearing only a wet diaper or wearing a onesie (with a diaper under). Can you believe that they look more impressed when seeing me in the onesie than seeing me in diapers? I think because there aren't onesies for adults in Brazil. I bought mines from US years ago. My onesies are all plain white, but they are a really different vesture for Brazilian people. Maybe that's why they stare at me in amazement trying to decipher what's going on.
My urologist also saw me in wet diapers twice, and he wasn't impressed when saw me in a wet diaper. He's probably seen countless dudes in wet diapers over the years. I need to go there every month to get a prescription for Myrbetric and an updated incontinence report (my healty plan covers 50% of the Myrbetric cost, but I have to present an updated report each month to prove I'm still incontinent). He's so professional that being in a wet diaper around him doesn't turn me on.
The same happens when I'm around the lady that cleans my apartment twice a week. She learned at her first day working to me that I'm incontinent, because since then she has to collect my used diaper from the previous night in my bathroom's trash can and all the used diapers from the days she isn't here in a bigger trash can at the service room. She does her job taking out the garbage and nothing had ever to be said. She also has access to the diaper stash in my wardrobe, it would be impossible to keep my diapers a secret from her. And because at home I just wear a diaper (my home, my rules) it's pretty common to be around her in a soaked diaper. I work remotely on the days she comes and I don't change my habits because she is around. I go through the day wetting myself as usual and when I have to go to the kitchen to drink water or cross with her at any room, it's pretty obvious my sagging diaper is becoming heavier. I see no reason to change my lifestyle because of anyone that's paid to work at my place. She's very professional and never said a word to me about my diapers. And to be clear, it doesn't turn me on being padded around her not only because she is professional, but also because I don't get aroused exposing myself to women.
A funny story came to my mind, though. Once, after changing my diaper in a stall on McDonald's, I got a giggle from teenage boys that caught me with my pants down taking pictures of my diaper at the mirror in the middle of the bathroom. Sometimes I like to film my public adventures, the best ones I share on my Twitter. This time I wasn't filming, it was a casual moment after a private changing in public (I didn't change in the middle of the bathroom, this time I changed in a stall). I was leaving to meet some friends and while passing by the mirrors I checked if the diaper was ok. So I found kind arousing seeing me in a diaper in the middle of a McDonald's bathroom and decided to put my pants down and register the moment. That was when the three boys came in. What could I do? I put my pants on, take my backpack and got out of there in a hurry without looking back. My heart was beating faster than ever, I got to the car and tried to calm down repeating to myself: “what don't teenage boys giggle at, right?” Nowadays when I remember this story I laugh to myself.
This is just one of the vast experience I got exposing myself through the years. Letting guys see me wearing wet diapers out in the open has turned me into an unashamed diaper lover. Every time I push the limits a little more, I get more confident. Wearing diapers in front of strangers doesn't bother me at all. I've never had a bad experience wearing diapers in public.
I wouldn't get a thrill from wearing diapers and wetting myself in public if I found my behavior perfectly acceptable. It's my way to rebel against society and its rules, fight diaper stigma and be unconventional. If there's an opportunity to wear openly and publicly, I won't miss it.
Pleasure is the supreme good, purpose and aim of human life. Pursuit of pleasure is what life is truly about. Happiness is a key component to having a well grounded and well rounded grasp on your own mental health.
If for whatever reason, a person gets a sense of fulfillment out of wearing diapers in front of people, I think that is something that not only deserves respect but should be applauded. If you have enough self awareness to know that wearing out in the open is what you want or need to live your best life then you should be admired for that.
Do what makes you happy. Life is too short to be miserable or care about what others think about how you find your happiness.