I just did the backpack euro hostel thing at 35
I look 25 but have the vivaciousness of a 50 year old
So visually I could fit in but I am so used to being anti social weirdo I would just hang out on the side and glare at everyone
I also don't care about their dumb rules or like having 20 year old girls tell me what to do so I would keep getting yelled at
Really I don't know why you would WANT to do this past, say, 27 or so. It really mostly sucks.