I don't travel for work much at all now, but used to fairly regularly. When I first started that gig I was around 30 and being new I went with the flow on things like dinners, drinks if that's what others were doing, etc. I automatically went along, wherever everyone else wanted to go was fine with me, whatever the group wanted to do was fine with me. Then over time when I'd built up enough cred I developed a policy that during work travel, once we were done with the client for the day, it was my time. Much of the time I traveled with cool people so I had no problem grabbing dinner, drink, etc. But there were trips when it wasn't a great group and I'd just tell them I was going to do my own thing for dinner, had stuff to catch up on, etc. It was awesome picking wherever I wanted to eat, drink, etc., and being done whenever I wanted to be done. I think they liked it just as much.Pre-COVID I typically traveled 1-2 times a year for a week. I haven’t traveled since COVID.
I’ve never shared a room when on business travel, even when traveling with friends who I shared rooms with before when not on business travel.
Sharing a rental car, meal times, and maybe being seat mates on flights is enough, even when it’s with coworkers I like.
It is unacceptable to push it to hotel rooms when there are different sleep habits, potential liability, television viewing, and just need some privacy when calling back home, etc.
But sharing a room? That's insane. We'd book our own travel and I usually wasn't even on the same floor as my coworkers.