Yeah, well if it was anything like the ATT net there it worked pretty good before the mass arrivals and then was unusable for the duration of the show.
Two years ago, we had to relocate several hundred planes that were temporarily parked on the taxiway due to the sloshy conditions. Me and Allison used an my ATT phone and her Verizon phone and it was a random shot as to which one could get through.
We did manage to move the last plane out a few hours before Jack Rousch dumped his jet into the middle of where we had everybody parked.