Here's a thought, though just had it so likely to be full of holes...
For a start, it could be outside. Open air, muuuuch safer - especially if done in concert with masks.
How, you might ask? Cardboard needs to be protected from the very least likely chance of rain....
I'm thinking in a place like Phoenix or Vegas.
In a venue set up under the already established protective canopies of....
The Parking Spot. Or similar. This image is of the one in Houston.
Already fenced for the protection of cars.
They're low on business because of Covid and downturn in travel...
Or similar, as I said.
Open air, covered. That would do it, no?