I was there for the divisional event on Father's Day weekend. The place was packed. More people than I've ever seen attend a divisional race. It was obvious people were dying to see some racing after having all of the other bigger events cancelled up to that point. Not as many people were there as for the Mile Highs, but probably not too far away from the amount of people they usually get for the Night of Fire and Thunder event normally held in May. As for the seating, every other row had an X on it. So one full row would be open, but the row in front and behind it would have an X where people were not supposed to sit. As the night wore on, people were sitting with their friends and family like any other event and the whole, "you can't sit in a row with an X marked on it" wasn't really being adhered to. The Night of Fire and Thunder and the 4th of July Jet Car Nationals are their biggest events outside of the Mile Highs. They postponed the NFT event until September, but they have been promoting the hell out of the 4th of July event (Instagram, Twitter, Website, Radio). I hope they can figure out some more social distancing policies so they don't get shut down by Jefferson County.
Side note, Red Rocks Amphitheater, which sits right on the other side of the mountain behind Bandimere, still has their concert dates postponed or cancelled, but they are starting up their Yoga on the Rocks workout events. They normally sell around 2000 tickets for people to come and do early morning yoga workouts. Because of the JeffCo rules, they are only selling 175 tickets, but they are offering more sessions this year to try and accommodate the normal demand.
If JeffCo stands firm with the 175 limit for the rest of the year, there will be no concerts at Red Rocks and obviously no Mile Highs at Bandimere.