I am getting ready to reserve a site at fort wilderness for the first time. I want to make sure that I get the best site for the size of our travel trailer. Our trailer is 37 feet long and approximately 13 feet wide (with the 3 slides extended). Would I need a premium site to accommodate the size of the rv or could I go with a preferred site? Thanks for your help. I am sure I will have many more campground questions as planning continues.