@321make So you should be able to use the Dine by Wix similarly to this. You can link to the app directly (if you need a QR code Wix has a free tool for it ) and then customers orders through it.
Only quirk I might see is that it’s meant to order delivery/pickup and then go to the location, you may need to collect the user or they pay attention to when the order is available to pick-up (at the counter). You can learn more about the app below but I think that could work.
https://support.wix.com/en/article/dine-by-wix-an-overview