They will try really hard to make you take part, but just do what you wanna do. If you buy all their packages, then it's even worse cos you're constantly with the reps and I suppose if you don't join in with everything you'll be seen as a bit of a loser. I've been on loads of 18-30 hols and never bought a package and have always managed to have a good time and that. The only thing you CAN'T get out of is the first morning meeting as they will knock on your door for HOURS until you come down!