"We do things a little differently here!"
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My experience:
"Oh, well, here you need to download an app, consent to everything the app wants to do and register with your phone number. Then you can order and walk to the kitchen to pick up the food you ordered. Also, leave a tip if you enjoyed the service."
At least around where I am, the places that use an app provide a tablet with that app to order on.
That would be ideal. The place I visited did not provide any such options.
I would walk out and never return to any place that forces me to install an app