My guess is there is close to zero demand:
- People don't go to Dolphins games anyway
- Weather in hot in Miami in September
- People are afraid
- Many who aren't afraid don't want to wear a mask in the heat for 3 hours, deal with assigned gate entry, etc.
- Others would rather stay home due to a lack of stadium environment with limited attendance
Add all that up and demand is low. With that said, I will be flying to Miami and going to the game - probably won't buy my ticket until the day before.