From looking at the YS map I see there are numerous picnic sites, but does these sites offer grills? I am fearful you all will tell me grills are limited and you have to wait in line to use one. We have no way of bringing a traveling grill as we are flying and our car will already be overloaded. We plan to cook out often and we usually use charcoal. Is charcoal suitable here? I am from the South and we do not really use wood.