Confirm the campground allows delivery
Some parks allow owner delivery, some require the renter to be present, and some restrict outside delivery.
Check the rule before paying for a campsite if the wording is not clear.
Match the rig to the site
Use 34 feet for length, then think about slide-out room, backing clearance, slope, and hookup placement.
A site can technically list a long enough length but still be awkward for a large travel trailer.
Understand payment
Direct booking authorizes your card when you request dates, but the rental is charged only after approval.
The $500 security deposit is a hold and is released after pickup if there is no damage.