We've never stayed that far down to the I4..always right around the 192/27 junction, and no further past a mile or so from the junction.
So I don't know how the traffic is on the I4, but that would seem to me to be your best bet to get to the parks in the most direct way.
Of course the homeowner is going to know the "better ins and outs"..I'm thinking cutting up through Champion's Gate, Ronald Reagan Parkway...?? Might work too.
Are you thinking about doing 1/2 days in the parks...coming home for lunch and then going back? If so, I think I would look a little further "in".
Again, someone with some more knowledge of the "shortcuts" in that area would be helpful
Aylesbury is south of the I4..and knowing that the junction for the 27/4 is a 10 minute trip on a good traffic day - from the 192, if coming up the 27...add to that another 15 or so to the parking lots...
Don't forget to ask the villa owner about construction in the area..if we're not finding a lot of info, odds are pretty good it's a fairly new development - which tells me that there's some building going on somewhere
HTH!!
