Ya it supposedly messed with the VEX Net signal.
As for WIFI or Cell, I barely got good coverage last year for AT&T, I will have a hot spot with me, but I dont suspect I’ll be able to use it with the walls in that building.
I’d suggest bringing devices to record matches if you have kids for scouting, also, be ready to walk. We were planning on just making camp near the match fields cause of the walk we did last year every time for a match, we never really had time to go back to our booth to fix something, we always fixed at the field area in the back of the stands.
Side question, besides the driving teams, can walkies be used? I may just invest in something like that to cover the area.