Can we bring tents to set up / also grill out ?

Yes

Yes. You can tent camp and have a camp fire. They suply each site with a fire ring with a grill shelf on it.

Yes you can but in order to camp you have to make reservations for spot if not all is taking and yes you bring tent fire wood set up fire pit an all. They have two camp sights ,ones for electric and other doesn't have electric.