Could somebody 10 burgers from a mcdonald's and other fast food places or would they be like "We can't do that try somewhere else"?

Most places would sell many more of than that if you ask them to and pay for them up front. They are in business to turn a profit and if they haven’t ran out of everything to make it with then they probably are told that they have to do it.

My daughter worked at a Subway next to the campus. They were in the top 10 in sales in the entire world for Subway. It wasn’t unusual to have a campus or sporting event and people would come in and order dozens of sandwiches to cater their get-together or event.

I used to have to order for my family at these place and i'd order sixty something hamburgers and the employees always got made or said something snarky. I also had to wait like an hour.

They can do it they wouldn’t judge you they’ll just think where are you going to put it all that’s all

McDonald's is gross

When I was a McDonald's grill cook in 2015 we once got an order of 100 cheeseburgers and 100 fries for a company picnic