Every restaurant I've work in hasn;t been tough. What, the metric on toughness is now about how much you move? Stations? Yeah, if you're only at the grill or sandwich area. But when you're in the front you're moving around.
Fast food is also more dangerous than serving the food. Fryers, ovens, grills. PLUS, as a waiter I NEVER CLEANED THE FUCKING BATHROOM. While in fast food I had to clean up shit or barf weekly, which includes the womens room. Working next to a major interstate, I saw some shits, believe me. That and period blood left all over the toilet.
Oh yeah, and what about the customers? Sorry mate, but people were routinely shittier to me as a fast food employee. As if I wasn't a person. Your body feels gross from the cleaning and food smells. Your soul feels gross from being cursed at for no reason, being lied to about "messing up orders" etc. Not that being a server was all pleasant, but it was much better. In the restaurant I worked, busboys would do most of the cleaning. Aw man, but I had to wrap silverware sometimes, or wash a table really quick! Boohoo!
But wait, there is more! I made way way way way way more money as a server. Between serving food for tips, and driving delivery pizza, that was some of the easiest cash I have ever made.
Waitstaff in the US act like they have the worst job out there and deserve more than they get. Sorry, out of the variety of jobs I've had, serving tables was some of the easiest work.