ATA got the contract when it looked like Sun Country was closed for good. Now that they are back in the air, Im not sure what is going on but I know ATA at least has the contract through the end of this month
ATA has been using thet 727's that were slated for retirement to fill the funjet contract. The 727's are now slated to be retired by April 31st. I did here though that ATA has dedicated 6 737-800's for funjet work.