You don't say how many days you'll be there or which dining plan or how many people are traveling with you. Your budget for dining tips could be huge - a meal for 4 adults at Artist Point, for example, is a minimum of $200and many people on the dining plan will spend the equivalent of much more than that by selecting high-priced entrees and then adding appetizers and alcohol...an 18% tip would be $36 just for that one meal at a bare minimum.
Its also easy to say you won't be buying a lot of souvenirs. I can tell you that I just returned from 16 days at WDW and I went way over budget on souvenirs and I'm not talking just Tee shirts and plush animals. Scarves, watches, rings, etc.