They use the rule of 3 (a trailer, tent and vehicle) (2 tents and a vehicle) one trailer and 2 vehicles) etc. Hope this helps.

We used a screen tent over our picnic table. No problem. There are strict rules about being bear aware, so don't leave any food or things to attract wildlife (stove, toiletries, trash) around your site or in tent.

Yes, in most sites you can have 1 trailer/camper and one tent. The tent must be on the gravel area unless the site has a designated tent pad.

Don’t recall seeing any tents with trailers. I am not sure they allow it but definitely space for it.