I fly to WDW 4-6 times a year and prior to them being pulled out of Dallas Nov 22nd, always pretty much flew Air Tran. I always booked early and paid for seat 13D (the first $13.00 aisle seat on the left as you board). Don't know why, but that was always my seat coming and going.
As a solo traveler I can't count the number of times some family that chose not to pay for their seat would go in at the 24 hour mark, choose one of those seats for free, and then expect those of us who did pay for them to move to some middle seat back in the back of the plane to accommodate them.
Due to claustrophobic issues and not liking to fly anyway, I can't handle sitting in the back of the plane (looking up that long tube
) and I don't do middle or window seats. I'm willing to pay for the seat I need and that means close to the front of the plane and aisle seat. Plus on Air Tran if you paid for those $15.00 or $13.00 seats in the front of coach you were guaranteed Boarding Zone 1. If you went in and chose them at the 24 hour mark, you got Boarding Zone 7, which means those people frequently had to gate check their bags, due to no overhead space.
Due to no more Air Tran out of Dallas, my flights for my Nov/Dec and Feb trips were on American. I went to seatguru to see how they board and found they board back to front, so even though I don't like sitting back there, I did choose seats about 2/3's back. I still got an aisle seat though and kept my eyes closed, listening to my mp3 player the entire trip, to keep my mind off where I was.
Spirit started a flight from DFW to MCO I believe this past week (March 22nd). Anyway, I currently have my May and Sept trips booked with them and am considering paying for those bigger seats up front, but haven't yet.