@Penny453 Propane. You would not believe how many guests have no idea what to do with a fire, and who will actually WALK AWAY with the fire still going. At least if you offer it as propane, they may have the common sense to turn it off, although we had one guest who left our grill on all week.
If you go with wood, you will want to post the local NC Fire Marshal website for checking on when you can have a burn.