Approximately how much do they charge a night for a trailer apx.20'

I believe for a trailer its like 160$ with sewer, electric n water hookups.. But different prices depending on what your needs are and what areas you want.

They are expensive for a tent site with electricity and water, on a weekend (non holiday) 2 nights 3 adults 3 kids I paid $300

Week nights are cheaper than weekends and holidays. Different areas are different prices and whether there are hookups, partial, or no connections also a factor. I think winter rates are cheaper too.