Oh yeah, the "do things that you wouldn't do at home" is also a big thing, in my opinion. Even if it's sad, you will only keep in touch with little people probably afterwards, but you can use this to do all the things you always wanted to do but for whatever reason you did not. Go out somewhere new without a plan of anything, without preparation. Get lost (literally). Over the Golden Week in Japan a buddy of mine visited and we did so many stupid things. Literally got lost in the city at 2 am and walked to our apartment for 3 hours, but we met so many people and it was such an unforgettable experience. We saw things which we never would've seen otherwise. I did go to clubs (which I normally never do) and a lot of other things. Try things you'd never thought you'd like. I think this is one of the little occassions where YOLO actually fits :D