Amazon. They do same day grocery delivery service. You could probably use any local grocery store that delivers as well. … Or just take an uber into town and buy some frozen patties? Will you have a hotel room with micro fridge or were you planning to use the hotel’s kitchen? I would say check with them directly, as that sounds like an unlikely plan.
If you plan on a delivery I would check in with the hotel even if you’re cooking in your room to be sure they will be able to accommodate you so your beef (probably delivered on dry ice) won’t go bad before you get to refrigerate it.