well, I don't know how to describe it, but I think it's basically one of these places that you go to and they organise the child's party for you. I'm new to all of this too. I'll let you know tomorrow!
fisil - am I right in thinking you're in Battersea? Or was that someone else? Are you going to the play place in Earlsfield? If you are, they have a v. nice cafe so you can purchase a snack and relax during the party.
Oh my geography isn't up to scratch - is it Tiger's Eye? (Which I think of as being in Wimbledon...) Yes there's a cafe - not sure that on my one experience I would call it "nice", but you won't starve!