4. Use Gift Cards
While WDW trips (including the dining plan) must be paid for in advance, you should be prepared for other expenses. Said expenses will include additional snacks and any souvenirs you may purchase on the trip. To prevent exceeding your miscellaneous budget, decide how much money you will spend and purchase a gift card for that amount. If you can have the strength to not spend beyond what is on that card, your wallet will thank you.