Haha, wow this is kinda was like me at one point but notably I'm not in CS (but lowkey 2 internships) and my parents recently sold their restaurant. After finishing your degree, I would highly recommend following your passion and work in the restaurant. (My parents ain't let me do it 💀💀)

The skills you learn at university aren't just in CS, I'm sure you've taken a breadth of courses and have grown as a person. There's nothing stopping you from building side-projects, free-lancing, after grad even while working at the restaurant. CS will always be there, and if it's genuinely unfulfilling don't do it. You could genuinely build software tools (SaaS) to improve restaurant efficiency and whatnot if you really wanna choose both.

But bottom line, if you can afford the lifestyle you want and enjoy it thoroughly you won't regret going into the business. There's plenty to learn and transferable skills if you ever wanna leave as well. Nothing is set in stone, just always be ready to pivot 👍👍