It read to me like that's how many you can bring in, so it is possible to save the extras if you somehow have any.

I smell arbitrage.

Yeah there's money to be made here!

Let the free market solve this one. I'm imagining a drone delivery service that sprays a uniform jet of keg juice onto your hotel quarantine balcony from a safe distance. What could possibly go wrong.

I was thinking more along the lines of paying other tenants to buy beer and then I'd sell at a premium to those who want more than 6 a day.

There are security guards ensuring no one leaves their front door. Trading any fluids, bodily or jarred, is off the table.