How is cell phone service during a large convention there? Curious if a "my-fi" would work there. For Verizon, T-Mobile, AT&T, etc.

There is generally local Wi-Fi set up during the large shows I have attended there... Hope this helps

Strong signal especially during shows

I too have AT&T. When we were there during cowboy Christmas, signal strength was good, as expected for being in the city, but because the number of people, it was slightly slower.

Works well. Had no issues with it

Have AT&T and had no problems with service. I'm sure during a big event it won't be great but it did the job.