Airtran is being a little more flexible these days with the 500 hours Part 121 PIC requirement. I was able to get my buddy an interview with 4 years of right seat experience at Eagle (ERJ time).
If you know anyone at Airtran and can have them write you a recommendation that you could bring with you to the job fair, that would obviously help tremendously. Also, as previously stated, showing up at the job fair and being able to show a strong desire to work at Airtran would help impress the recruiters. Knowing alot about the company, company's growth plans, etc. would show you are serious about wanting to work for Airtran.
Personally, I hope we hire every Skyway pilot that shows up. I think Skyway pilots could be very happy getting out of that mess they are in with Timmy H. and Midwest. And with the amount of growth we are doing in MKE, these guys could be based in MKE once again in the near future as I don't see Midwest doing a very good job of protecting their hub.