Ticketmaster tickets hard to access amidst tower congestion

An unforeseen event we ran into when we showed up over the weekend, was that that actually accessing the tickets we had pre-purchased through the State Fair's connection with Ticketmaster's app was incredibly difficult, due to barely any ability to access a worthwhile connection or signal over the towers.

It appears from celmapper.net that there's about three Verizon towers, three Sprint towers, three AT&T towers, and only two T-Mobile towers

At about an average of 80,000 people per day, (as calculated by the 2015 numbers of 982,305 over 12 days (so divided by 12), and "over 812,000 since 2010" according to Statehouse News Bureau it makes sense that the towers would be next to impossible to get a worthwhile connection with for any data, but it's just something we hadn't really thought ahead about when we approached the gate and tried to start loading the Ticketmaster app for the QR codes.

Not sure what the solution is other than just waiting the 5-10 minutes for it to load, but OOF I wish I had thought ahead to try to load them up some other way, since Ticketmaster restricting screenshots (fraud/theft? Transfer from one person to another easily? IDK why) limits other ways to do it.

What's the solution for this, since we live in a digital and smartphone age, but congested events like the Ohio State Fair, any major sporting event or concert, etc. clog up the towers and networks so much?