Winter Campgrounds

ask guests to pay to get to your child's birthday party?
Is it wrong? Why do people do that? my son loves me really have your b-day at Camp Jellystone. we are obliged to spend at least 2 nights in a cabin, at least $ 360, plus food for the purpose of week, plus food type cookout for the party, plus decorations. There are swimming pools, water slides, and a winter wonderland theme so type week. but each guest costs $ 10! can stay 9-11. is unreasonable or rude to ask them to cover their own entry, or should we suck up and fork over $ 100 for every 10 people? or just go as a family thing at another time and do a different kind of parties, perhaps … this is 6 years old if that matters. What is the proper etiquette here?
You should not make guests pay, EVER! They are there as guests, in addition to often bring gifts, to ask for money would be an insult. If you can afford not to.
Winter camping