New hires get 70 hours a month at 35.50 which goes to 37.50 on April 1. You get paid starting the first day of class. Since training is in base (ATL) you don't get hotel or per diem, unless your sim is in MIA or something, then it's 1.75
Expect to spend at least 4 month in training waiting on IOE.
Reserve...hard to say. They can't train crews fast enough for 717, so might be a month or so. DC9 reserve is about 5 month and will probably not get better as 14 of them are parked this year leaving only 16 on property.
As far as upgrade..DC9 upgrade went 8 month and 717 9 month in Feb., but I don't think company allowed that. I'm not sure how they handled it but there were no upgrades posted for March. Contract allows the company to bypass upgrades at their discrcion before 2 years of service. There were a lot of high time people, typed in heavy equipment hired here after 9/11 so I would expect upgrade to go very junior, but mainlly to those folks.
Line's differ. Many people commute. So it can be done.
Last month 717 lines had from 12 to 16 days off, and pay credit was from 75 to 100 hours with average of about 87. The pay credit is almost always higher than scheduled flight time, thanks to duty and trip rigs.
Over all AirTran is a good place to work for, especially in today's difficult times for the industry. And from what I hear from old timers things improved a lot here and are impoving dally.