My friend just came back from their trip and she said the one unexpected thing was the tipping on the sit-down meals on the dining plan? I thought gratuity was included with the dining plan? I was counting that into the equation for the value of the plan. She even said that at a couple of restaurants there was a separate paper showing what the proper tip should be. Anyone experience this? Isn't gratuity included and if we want we can leave something extra?
I never left extra at any resturant that "left" these cards in the bill when we were paying with the dining plan. Also they "leave" these in there when you order extras not included in the dining an have already added on 18% tip in most cases.
At all the places we dinned at we NEVER came across those "cards" showing what should be tipped. 

