The grills are your basic state park type grills - box for the fire, heavy grill on a bracket that allows it to be adjusted up or down. Bring charcoal, fluid and matches and some aluminum foil if the idea of placing your burger directly on the grill grosses you out.
We use a disposable grill topper. It is flat, lightweight mesh material and goes on top of the grill. We use it a couple of times and then toss it. They are really inexpensive. I know we've found them at Camping World and I'm not sure, but you might be able to get them at Walmart. Hope this helps. Also, we don't bother with fluid....we get the ready to light charcoal. One less thing I have to pack.
And for those who don't wish to carry anything, Matchlight charcoal is available at the trading posts. Small bag, many dollars, bring cash, Visa or Mastercard.