I'm sure there are options to take $10 off on Tuesday evening if you bring a can of green beans from Minyards or a 20 oz Dr. Pepper bottle on Thursday morning. Having said that, It does seem like they would benefit from having some sort of surge pricing model. Weekends can be full fare for entry (maybe still have some reduced entry with the Dr. Pepper bottle) and parking, but during the week make entry $5-$10 with parking in that same range. I'd bet their attendance would increase significantly. The coupon cost increase was a scam. Other than the vendors themselves realizing they are hurting sales by not reducing the number of tickets needed for a fried oreo I'm not sure much can be done about that.
We used to go on opening day every year and for TX/OU as frequently as possible. It's been 2 or 3 years since the opening day trip and pre-Covid for the game for a variety of reasons.