I always wear diapers overnight. Because they are so absorbent, I can sometimes get away with wearing just one for up to twenty-four hours (or until I detect a noticeable urine odor if in public). I'll usually put one on at about six in the evening for sheer comfort and enjoyment. If I go out between then and bedtime, the pleasure and convenience increases. Such occasions include going for walks, late grocery shopping, dining out, or visiting a pub to have a few drinks with friends.
This is my current favorite that are so absorbent: http://www.healthwick.ca/rearz-inspire-incontrol-super-absorbent-adult-diapers/. Since I've begun to wear these, I've also begun to wear women's shapewear briefs to handle the additional bulk when in public. It isn't likely they'd be needed to contain the extra weight of heavy peeing before bedtime, but are used as "insurance." I haven't found anything similar in men's briefs. At home, with my diapers, I'll just add a tee shirt during the day.
With my actual need to wear diapers (guards/men's pads need to be changed too often and aren't fun when they over-saturate), I could really care less who knows, but have been discreet to date when people don't know. Maybe that will change! I live in a small town where everybody knows everybody and gossip abounds. Acquaintances include the town mayor, the district mayor, town council members, newspaper publisher of the local rag, my member of parliament, past provincial premier (governor - now deceased), and so many others in the public eye, plus I was a former sergeant-at-arms for the local legion branch and led the town's parades. The older ladies of this town sure do like to tell all!