I assume you have experience at Fort Woefull when you talking of taking a 40footer out there.
I live in Orlando, so do not partake of WDW's "camping" experience (Yeah for Employee Passes) but I have taken my 30E35 Titanium out there three different times for friends/family to use and some of the spaces are almost impossible. This is with ten years experience backing thirty foot plus fivers into almost any space you can imagine including between the houses into the back yard.
Just assuming, of course.