1) I don't consider myself a good dancer, but I enjoy it a lot and I think that makes it up because I do get invited to dance often.
2) I am not getting paid. I don't need money atm, so 20-100 euros wouldn't matter for me and anything higher they probably get a real stripper. The reason I am thinking of doing it is for the fun. I think it going to be more of a house party with a handful of guys doing a little dance/striptease up the underwear, and probably a lot of girls around. Some drinks, dancing, and a normal party apart from the striptease.
I am just happy they asked me, and I like the thrill of thinking of doing it. Like I said a little more motivation for workout and that's never bad.