We only stayed 5 days/4 nights so I thought I would have no problem keeping track of our remaining credits. Boy was I wrong.
For my summer trip I cut out a square of card stock paper. I cut the paper slightly (similiar to what you see on a flyer to pull of someones phone number). One side is for Table Service, the other counter, the other snacks. I will just tear off a tab for each credit we use.