And, the cashier tells the customer to go ahead and pay, then walks away to fetch their order, leaving them no obvious option other than to select 10, 15 or 20 percent, or the awkward position of asking how to manage the tip.

I have not gone back. I tip, because of the system and the position the labor is in, but I do not appreciate the aggression. I do, however, understand why.

Would much rather see everyone paid well, move bad service to a social issue, and proceed from there.

That should read, "This one did not give the option on screen. Button that worked was not indicated in any way."

Sheesh

This one did not, and the interaction was planned so there is no opportunity for discussion, until after payment.

Other parts are still running all manner of those little POS terminals and they vary widely.