Is it wise announcing their top incentive for voluntary denied boarding? Maybe I have less faith in humanity than is called for, but I would imagine people would hold out for a higher "payday" knowing how high the airlines are willing to go to get your seat.
Any stadium having a seating capacity of 30K or more people where either a regular or post season major league baseball, national football league, or NCAA division one football game is occurring. This also applies to NASCAR Sprint Cup, Indy Car, and Champ series races excluding qualifying and pre-race events.
But if you're squawking and talking with ATC you're good to go. DAB has the speedway there and AFW has TMS with acft taking off and landing during events. One of the biggest problems in these events are NTAPs. However, with all the land around Vegas, to build right next to the airport is pretty stupid and people would probably end up complaining about there "being an airport put right next to the stadium!"