Table Service Tipping with Disney Gift Card?

[choover2576]

As a way to budget my expenses, I've been buying Disney gift cards at a discount to use for our dining. How can I tip with a gift card? Is there a tip line that I can fill in before they run the card?

TIA!

 

[Chippy4]

I've paid and tipped for meals with a gift card. The receipt had a line for tip just as if I'd paid with a credit card.