You could use your own pit as long as you are on the designated area to bbq next to theirs
Byo charcoal but use their pits
I've seen that they have their own barbecue pits there and the times I've been there I use charcoal, if you want to take your own I would call to see of that is allowed
I'm not sure about taking your own pit since every area has it's own pit and you can use charcoal
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