I'd also add, in Minnesota tips by law have to go to servers which is why the restaurant has to specifically say it's not a tip, they otherwise wouldn't be able to use it as a pool to pay higher wages for back staff. I believe some restaurants actually use it as a pool for all employees as well. Restaurants have had to find new ways to get employees and pay them more, probably why most beers are now at least $8.....Oh, I miss my 5 dollar pitchers in college
Each restaurant does it a little different, which only adds to confusion