I can only reiterate what the others have said, but another suggestion if youu want a little extra protection is to ask if you can pay by credit card so that you have their back up also if things go wrong. I do this myself when venturing into the unknown because if you pay the money off before the interest is due then it costs little extra (just the credit card fees) but can give you a lot of peace of mind.

We dont have a guestbook on our website but many of my previous guests have said they are happy confirm that everything is as described if I want them too and I'm sure I'm not alone.

Your children will have a wonderufl time I'm sure.