I recently had sex with 2 men sequentially, at my first glory hole experience. I loved it!
The hole was just large enough for their cocks, but not their balls. I was able to see thru the hole, that each man was reasonably dressed, married, in their early 50's, and their naked cocks were clean, nice looking, with no red spots, or odor.
I put my finger into the hole, and removed it. Shortly thereafter, a nice hard cock appeared, and I gave it a preliminary lick with my tongue! Tasted great! I never used my hands, but moved my mouth and lips over his cock, and slowly started moving them back and forth. I loved using my tongue on his shaft, glans, and peehole. He loved it. After about 10-15 minutes, of very enjoyable cock sucking, he ejaculated and his cum tasted great. I swallowed it all. He liked me cleaning his cock before he removed it from the hole, and I felt very satisfied, because I did a good job.
Five minutes later, the second cock appeared, and I did all that I described with him also. I plan on returning!