MNChill,
We'll keep an eye out for you. If you have a Premium site reserved, almost any of the sites should be ok. Inner loop in 1400 may be a little tight for 65 ft, but give them a call so they know your dimensions and they will fix you up. Personally, I like to be close to the Settlement. I love the sounds of the boats and the easy walk to the marina and Settlement bus stop. Since Chris (PA Hunter) said he requested the 400 loop, I figured I'd try to get in close to another DISer. Besides, he is coming to the GSP DIS fest next year and I thought I owed it to him to fill him in on what to expect.
Sleepy,
I have had a hybrid, a TT and now, two 5ers. For me it is the extra space, both inside and out. Most 5ers have considerably more outside storage and generally better inside storage. They are typically taller which allows more head room and more space options going up (storage, bunks) that you don't have in a TT. TTs will typically get you better fuel mileage. Most don't weigh as much as a similar length 5er and are shorter. I personally think they are easier to back up, but a 5er is more comfortable towing in general. No sway. They feel more stable overall. 5ers are also much easier to hitch up. Get the pin box the right height, back in, lock the hitch and raise the legs. None of the guessing trying to line up a ball and hitch, cranking down the tongue jack, chains, WD bars (that seem to want to kill you), sway control.
As for talking you out of a cabin or DVC. I wouldn't buy a camper only to use at the Fort (unless I lived close enough to go often). I think most of us have campers because we love camping. The Fort just happens to be the happiest place to camp... anywhere. If you think you would like camping, then consider a camper, but I wouldn't buy one just to have an alternative to staying at a WDW or off site resort.
j