Tip: $1 per complex drink
Notes: At large chains, tip s completely optional. At smaller shops, tip $1 per cup or more for difficult orders.
Notes: There is no tip necessary for accessories such as scarves.
Notes: Tip when the car is returned to you.
Tip: 15-20% of cost of the bottle
Notes: At most restaurants, it’s okay to just tip the 15-20% of the final bill and let the restaurant divvy it up.
Notes: No less than 10% for poor service.
Notes: Consider giving more for extras such as mints, perfume or cologne.
Information borrowed from http://www.hospitalitymanagementschools.org/tipping/