I watch ABE-MCO and PHL-MCO like a hawk. A year ago I would have said no way, hold out, it will drop. AT rates back then were $69-$89 one way all the time. Since about December I've only seen AT rates go up, up & up. I'd book that now! I flew to MCO twice in March on AT, paid $225 for the 1st trip & $245 for the 2nd, and that was watching the site several times a day.
AT does give you a credit if you see the fare drop at all, to use towards seat selection, upgrades, bag fees or future flights. So it's not a refund, but some reassurance that if it would drop, you could recoup the difference in some way.