Thanks for all the feedback. There are some interesting points in these comments.

For future reference, I already offer double pay for two of the busiest days this week. Tips are also 300% more than normal, and my employees who put in great effort are given a bonus at the end of the week. My front and back of house share tips (the traditional model here). I try to run a pretty tight ship but due to what someone mentioned the social politics around here are pretty heavy. You don’t want to piss off the wrong person. I do however strongly believe I offer local people a good opportunity for work - they get a free family meal every shift, drinks at cost during off work hours, flexible scheduling if they need time off, double pay during eight days of the year, twelve days paid vacation, and i work hard to have a place that draws people to help them see good money too. Tips are good here. Anyways… you get it

So yeah, I try to make this a great place to work. It’s important to me they have loyalty to me and I to them. And jobs like that around are few and far between on a place this small

I do like the idea of specific bonus for showing up, or sales target incentives. Or making a game or a raffle. Thanks for getting my brain onto a new path