Last year the app was unusable because it wouldn't even come up when there was no internet data (and there was none for a bulk of the busiest days). This year the dead times were much better (really only completely dead on Wed and Saturday afternoon) but still that's a peak visitor time (and why it crashes obviously).

I have a pretty good handle on the internet because this year we were relaying information between our operations building and the Vintage hangar using a little Verizon hotspot. Next year, hopefully, we'll get a direct connection.