Not your typical tipping question, however.
When you purchase a gift card for a restaurant or a service (ie massage, mani/pedi, etc), do you include enough for a tip as well?
For instance, FI gave me a gift card for a body wrap and massage one year for my birthday. He put enough on the card for the service as well as the tip. FFIL bought a gift card for FMIL at Christmas for a massage and did not include the tip. When I get gift cards for my mom and her husband for christmas or birthdays for restaurants, I try to put enough on there so that it will cover the meal and at least most of the tip (obviously I can't predict what they will spend in total).
I only ask because I'm going to get a gift certificate for FI for his birthday to get a massage (he's never had one and wants one after his next marathon) and I of course will include the tip but I wanted to know how common that was.