I have heard the same rumor and instead of dropping the gratuity out of the DDP to save, I would like to see them do a simple restructuring to the DDP and have an either/or offer:
keep the Meal, Drink, Tax & Tip but instead of each person getting an appetizer and an desert, they get to choose 1 or the other.
I LOVE THE DDP, but it is SOOOOOOOOO much food. If they up the price or change it to where the tip isn't included, I would have to reconsider doing the DDP. I hate to take cash to the parks and I don't want to charge my tip.