Your choice. Even when we don't have our collective knickers in a twist, there are songs and discussions with adult themes and language.

Eleven year olds can be pretty darned nasty, and at least one of the guests has seemed to be at about that age level or younger. I don't think they're going to learn anything new, but you may want to shield them from the knowledge that adults can behave badly. They may not have realised that on their own as yet.