Don't forget payroll too.
It really does sound simple from a high level. When we take perfectly legal allowed normal businesses and force them to close for external policy reasons (like a pandemic) and we know they'll be allowed to reopen at some point. It would seem like the government that's imposing this external temporary restriction could include simply pay for the service it's not allowing to occur. There would be no market forces or competition, since policy makes it illegal for the service to be sold to anyone else.
We want a restaurant to close for 30 or 60 days, just pay them enough to cover all costs for those days replacing all their normal customers.
It wouldn't be cheap. But, halting and reducing large chunks of the economy isn't cheap. The current system has only the impacted businesses deal with the cost instead of the country as a whole.
In the case of WDW. If the temporary policy means we should close WDW for 60 days, then the government could pay for all the tickets for those 60 days. With the stipulation that WDW continues to pay all it's employees who would have worked, and it's other costs and suppliers.
A one for one customer demand switch. Make the normal customer illegal and pay it directly instead.
It works by writing lots of checks. Spending lots of money upfront. In an ideal world, it works by not putting a lot of conditions on how those are distributed, send out an over abundance. That doesn't mean it's all free money for everyone. Tax it back at the end of the year, whatever was to much. There's lots of risks around moving to slow and not spending enough, people and businesses falling through the cracks, decisions made on outdated and no longer true conditions. Reconcile afterwards eliminates that problem.