Yes I know there hundreds of threads on tipping and I have read many many of them - phew :-)
Just a question though -
We will often pay by credit card for our dinner and drinks at the end of the night, but I wondered if the staff have a preference as to how they receive the tips - ie. add 15-20% onto the credit card and sign OR pay the actual amount of the bill by credit card and leave a cash tip. Any thoughts?