To shed a bit of light of this situation (not Wakeland directly), but some directors want their kids in the proper headspace before a performance and it usually led to militaristic rules (I know pre 2017 the LISD district had a rule, or at least Hebron, where kids couldnt talk on a bus ride to any 1 day competition, pretty brutal) or implemented rules that attempted to stop bad behavior before it starts, which while good on paper just makes the whole fun of band non-existent.
The kids will still like the directors, but there are so many rules even for sitting in the stands that it ruins a lot of the extra relaxed fun from football games, post performance, and in general causes persistent stress, it happened with my high school band and its likely a similar conversation with Wakeland