I didn't know that, I'm just saying that, because KFLL being a pretty busy airport you'll spend a big part of your " flight time " ( hobbs on when master on ) taxiing and waiting for clearances. Experience being a very close relative did the ATP with them not too long ago, this relative wasn't very happy either with the general attention and perf. of the instructors, but that it is something that I'll risk saying is not that uncommon nowadays.
Me on the other hand I did it in Lakeland, Fl a few years ago at the same ALL ATPs and I was lucky enough to get a great instructor, and was very happy with the whole thing, also Lakeland being just a General Aviation airport. Anyway,this company I would say they are specialists in getting you the ATP, and in your case and with just the choice of KFLL I would still go with them; I would probably suggest that you try to book your flight time away from peak commercial hours at the airport.
Good luck.