I do not think a grill is provided. I remember avoiding the pucnic table, which is easily moved, but not a grill. With all of the fires out west, we don’t even try for a campfire anymore, and always use a portable propane grill if we are allowed.
It’s been 5 years since we were there. I would suggest calling them at
(520) 403-8116. Their website says wood fires are prohibited, fires are only allowed in grills, but I don’t know if they’re provided.