I forgot to add. I would be more than happy to help do the cooking. Sitting around all day tending the fire is something I love to do. Set up the hammock stand nearby. Sounds perfect.
Talked to a coworker whose family does catering around NoVa. He says the use a China Box for roasting pigs or other meats. Here is a web site that sells them as well as a lot of useful information for the cooking. I'll keep looking for rental possibilities. http://www.lacajachina.com/default.asp