Hey Mike,
I flew AT to the Dominican Republic and to Puerto Vallarta. Unfortunately I wasn't very impressed, especially on the DR trip.
We got to the airport at their recommended time (4 am) to ensure good seats (we didn't pay the 100 pp to reserve seats), the check in people were incredible unpleasant, very strict about luggage weight, and about carry on weight and dimensions. For carry-on you are allowed one bag each up to a certain weight and dimension, we had one bag between the two of us, it met the dimensions, but was above the individual weight restriction, they would not listen when we said it was for both of us (ended up taking out our water bottles and just holding on to them till after the checkin, then put them right back in again). The seats were tiny, thankfully our seats were at the back of the plane so my husband spent most of our 6 hour trip leaning on our seats from behind. You have to pay for headsets (we brought our own), used to get to keep them (neat wind up set) now they want them back!!
And of course, the food was horrible.
Dragon Lady