I wrote this about 10 years ago, which is when the experience I share at the end took place. Newer technology has made these adventures more difficult (pervasive surveillance, etc) but back then there were many opportunities for public nude adventures, which I took advantage when the opportunity presented itself.
My modus operandus was simply to 'accidentally' lock myself out of my room nude while 'sleepwalking'. When I first tried it, I wore thin nylon underwear (wetted down with a damp washcloth to make it semi transparent, as if from perspiration), but I eventually worked up enough courage to do it fully nude. Believe me, THAT was an adrenaline rush -- the first time I pulled a hotel room door closed and hard it 'CLICK' behind me, knowing that I was completely naked with no means of getting back into my room other than walking naked downstairs and through the lobby area. That first time, when that lock clicked, I felt my heart leap in my chest, and my dick stiffen up, because I knew there was NO going back!
I would generally use the opportunity to wander around nude through the corridors for awhile, enjoying being nude outside of my room. That's because even if I was spotted on a security cam (which were pretty limited 10 years ago) I would have a ready-made alibi for being nude like that. I would also zig-zag around a little as if I were slightly drunk (which would explain not realizing I had wandered out of my room in the middle of the night until too late). After exploring several floors and using the stairwells, I eventually make my way to the lobby.
Although I prefer showing up nude in the lobby when a female is working the desk, if it's a male it doesn't discourage me from undertaking an adventure on a given night. It's still fun to walk the hotel halls while nude just the same.
After I explain what happened they will either ask my room number and give me a key/keycard, or escort me up to my room to let me in. Either is good for different reasons.
If I'm given keycard or key, it means I'll get to make another trip to the lobby nude: either I give them the wrong room number and the keycard won't work, or I bend the key do it won't work and I have to go back for another one.
On the other hand if they have someone available to escort me up it means walking and riding the elevator nude with another person. Sometimes this has been a female employee who escorted me back to my room, other times a male.
In either case, I get to ride the elevator nude back to my floor. Sometimes no one else gets on, but at times the elevator has stopped along the way for people getting on. They're always shocked to see a nude guy on the elevator and hesitate to get on. But I always try to reassure them and explain that I was locked out, but that I'm OK with them getting on with me if they are. A few times someone came into the lobby from outside just as I was heading for the elevator and we got on together -- after a brief explanation of what was going on. It's made for some great exhibitionist experiences.
Once, I was staying at a motel with outside corridors in Springfield, MO when I got 'locked out'. First I got a little drunk to build my courage up and then started watching out the window for a time when there weren't very many people out in the parking lot. This place was pretty active so even at midnight on a weeknight there seemed to always be someone out there. Probably long distance travelers stopping for some late night shut eye.
Finally I felt ready. I hadn't seen anyone for a couple of minutes and figured it was time. I eased the door open as my heart began to race. Then I stepped out into the cool night air and quickly pulled the door shut before I could second guess myself and back out... CLICK!