We flew IAD-MCO RT in December and it was awful. I will never fly with them again. Both ways our flights were 2 hours late. on the way out, it was a 25 minute delay due to weather (no other flight out of IAD was delayed that night on the big board). on the way home, the checkin went fine and I assumed our flight was on time. No one was at the gate, so i called their automated line (which didn't work) finally spoke to a person and informed them there was no one at the gate and the flight wasn't on any of the boards by the gate, had to go to main section of terminal to see status, where is said ON TIME! This was ~1 1/2 hour before the flight. No representative arrived until 20 minutes before the scheduled flight time to say we were delayed over an hour, she was talking to people instead of making an announcement! So many people were upset. I contacted them by email and asked someone to call me when i returned home, but was ignored. Poor customer service, poor reliability. Not for me, I'll stick with SWA.
P.S. Plus my flights cost reduced and they wouldn't do anything.
Sorry for the rant, but I want to make sure everyone knows what they are getting in to. I certainly hope you flights all go well.