My sister ordered from Grand Sechuan at St. Marks (8 Street) located between 2nd and 3rd Avenue (NYC, NY). The bill was $65. The distance was up one block and across one avenue. She didn't know how much to tip, but figured a 2 block bike ride - about 2 minutes, right ? was worth $4. It was early evening, nice weather.
The delivery guy yelled at her and said she owed him a 20% tip - which would be about $12 and then told her to never order from Grand Sechuan again.
What do you think ? Should tipping be 20% for delivery people as well as eat-in ?