I have lived for years in countries where there is no tipping and after the first week I found it quite easy to save 10-25% on every meal I ate in a non-fast food restaurant. Occasionally I'd round up and not ask for change, but it wasn't such a tough transition.
What I found more troublesome was last week at a restaurant in Toronto when we used a gift card to pay and the tip was off the net charge to the credit card (when we'd calculated the % off the gross amount of the bill) and so the tip ended up being half what we'd expected. The server was noticeably upset and we didn't know why initially, and left wondering. In the parking lot we figured it out and couldn't decide to go back or not to give extra cash tip. But because we probably won't go there again (service and food was great, but inconvenient to get to) and no one had change they were willing to give up, we drove away.
What I found more troublesome was last week at a restaurant in Toronto when we used a gift card to pay and the tip was off the net charge to the credit card (when we'd calculated the % off the gross amount of the bill) and so the tip ended up being half what we'd expected. The server was noticeably upset and we didn't know why initially, and left wondering. In the parking lot we figured it out and couldn't decide to go back or not to give extra cash tip. But because we probably won't go there again (service and food was great, but inconvenient to get to) and no one had change they were willing to give up, we drove away.