Two minutes or two bites, but realistically when you can get to it. You wanna make sure they got everything they ordered, and it’s not burnt or undercooked or anything. The alternative is having to wait to get something fixed if it’s messed up. Source: 7 years a server.
Peaceful protest works great under two conditions:
Just a metric fuckton of participants
The implicit threat of violent protest (e.g. Malcom X behind MLK)