David V. - it's not "controlled" airspace for VFR traffic. There is no *clearance* available.
It is "restricted" airspace, sure, but simple two way communications and a discreet squawk code are the only requirements - bit like entering class D or C airspace (but with a squawk).
The airspace is a three mile circle centred on the mouse house, from surface level to 3,000' agl.
Looking at the height of local obstructions I calculate the ground level to be, near as damn it, 100 feet amsl - so it tops out at 3,100 feet amsl.
No contact with Orlando ATC? Fly between 3,200' and 3,900' as far as Kissimmee "Old Town" (Skycoaster) and all is well. You're clear of all restrictions.
After passing overhead Epcot (the big ball, "Spaceship Earth" [sponsored by Sylvania, a Siemans company], a subte but deliberate descent to below 2,000 amsl to avoid class Bravo airspace.
Kissimmee class Delta airspace tops out at 1,600' but overflight, below (not "at") 2,000' is not regulated to VFR traffic.
Anybody seen Google earth - 28.27.08North, 81.42.09West?
Buena Vista Aerodrome, whilst you are in Google, is at 28.24.06N, 81.34.20W.