You have to buy their firewood. Don't burn Driftwood. See reamer office for areas that are OK vs. off limits... Some areas are wildlife refuge areas.
There are birds that nest near the foredunes, so don't use that wood to make a fire, it's habitat :)
Yes you can drive on the beach as well as build fires. Consult park website as there are regulations on bringing in firewood from non local areas.
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