How long would you wait for your food to be served/prepared?

Well, sit-down restaurants are often really slow if they're crowded. That's why I usually go to fast food restaurants and only go to sit-down restaurants if they're relatively empty and I have time to wait.

What I really hate with fast food is that whenever we order a burger with chicken at a drive-thru place... they always ask my mother to pull up to the parking lot and wait about 10 minutes for them to bring it out. They never have it ready when we come to the window. Sometimes they even forget you're there, and you have to go in and yell at them (which defeats the purpose of having a drive-thru in the first place). It didn't used to be that way, but I think they've cut down on staff and expanded the menus, so it's a natural result.

I went to a kebab shop and the girl at the till said I'd need to wait 15 mins for her to prepare the kebab
Unless this is some fancy restaurant, then I may wait for that duration (even that I'd need to consider lol)

I said no thanks and I went for a fish and chip instead.

How long would you wait for your food to be served/prepared?