Randy A.
Google
The staff was inattentive and that's mostly because their ordering system is designed to fail to recognize technical malfunctions, answer questions before referring, and especially to ignore all manner of disabilities.
The actual system design promotes complacency. But most importantly the system is designed to fail to try to accommodate people with a variety of hidden, and very significant and relevant disabilities.
That's what frequently happens with QR code ordering system s. Customer service is frequently the casualty.
I almost never to less than 20%. When I tip 15% due to service, people think I'm being overly generous. My 10% tip today was overly generous.