Yes, there are a few spots for your size but also just down the hwy about a mile is another wildlife camp area with boat docks, pit toilets, a common covered area and dry camp sites for $10 a night if I remember correctly.
Absolutely! We have a 23ft trailer plus a 25’ tow vehicle. There may be a few spots for smaller rigs but all the others are plenty big. We seemed to be the smallest rig there on our visit.