3. What does it mean if I choose Standard or Excellent?
Standard or Excellent refers to the customary tip rates for waiters in the selected region. If you have received standard or average service then select Standard. If your waiter has provided excellent service then select Excellent. In some regions there may be no difference in Standard or Excellent due to the local custom. In some regions, a tip "percentage rate" does not apply. If the tipping information says to round up the tip, then you have the option to enable Rounding to calculate your tip.
