Earlier quoted context omitted.
The tip is expected only when you're at a real restaurant. No tip is required for fast food places. No tip is required up front before you're served. You should tip hair stylists and restaurant staff that brings you food or drink. I generally only tip 15 percent and I never tip at a buffet.
Where exactly are these unwritten tipping laws written? I've been living in US for the last one year and I feel that the entire tipping culture is a social custom that you are expected to adhere by. I was told that I should always tip at least a $1 per drink at a bar or cafe and I've been doing that but I notice that people go for "No Tip" on these iPads. So if most people are choosing "No Tip", where did this unwrit…
The unwritten rule is, tip your less than minimum wage staff that is working for you.