I've been watching this thread with fascination because as a non-Brit (despite having lived here over a decade .... I don't like to think how many years it has really been) I have NEVER had the Butlins experience. It is just so British. I'm not sure if I'm brave enough to join in the experience but I'll keep it in mind and let you know nearer the time (not sure when you would need to confirm number. I'm sure it will be a blast!
Dancing, you should go! I am sure I read on another thread you are heading back home at the end of the year (sorry if I got that wrong)
If you have never been to Butlins, it is an experience and people do not act very 'British' (stiff upper lip, etc) when they are there!
Put your name down and commit to going, you would really enjoy it, plus some great stories to take back with you.