If you want to come as a daytripper and don't want to eat with us or stay overnight, you can just show up and pay at the door.
(that may answer Peg and Bruce O). But the camp needs to know in advance how much food to prepare and we need to let them know how many beds/cabins we're going to be using, so if you want to eat with us, you should register in advance. It's not that you get a discount by pre-registering--it's that you get food and a bed to sleep in.

--Charlie Baum