If cities must "pandemic-proof" arenas (and other venues), might masks and temperature checks be required, along with empty seats?

How our cities can reopen after the COVID-19 pandemic, Richard Florida and Steven Pedigo wrote yesterday on the centrist Brookings Institution web site, including:

Prepare large-scale civic assets: Cities are also home to other forms of large-scale infrastructure: stadiums, arenas, convention centers, performing arts centers, etc. Because they bring together large groups of people, city leaders must pandemic-proof these assets as much as possible, too. Audience sizes may need to be reduced in theaters, with seats left open. Masks may need to be required and made available to patrons as needed, and temperature checks carried out. This will be critical for communities that are dependent on such attractions: A Brookings analysis shows that COVID-19’s economic downturn will hit tourism-driven cities such as Orlando and Las Vegas hardest. The sooner such large-scale civic infrastructure can be safely reopened, the faster our urban economies will be able to rebound in the aftermath of a pandemic.

(Emphasis added)

So, it's possible that an arena like the Barclays Center might need a new seating chart. But that's more complicated than a movie theater, which has much bigger seats, and more akin to an older Broadway theater, with very tight seating.

Not only are the upper level seats at Barclays quite close to each other laterally, they're quite close and steep, vertically. 

Masks and temperature checks? Those are plausible--we're in a new era. But it would significantly slow down operations, and add cost. And selling fewer tickets would add cost, as well, compounding pressure on the arena's bottom line.

One could imagine a new ticket surcharge: public health measures.