2. Gift cards or coupons
Cash and credit are nice, but so are gift cards, coupons, and any accrued discounted points earned from my credit card. I also read a lot of travel books and magazines for Disney that sometimes include pages of coupons for various venues, experiences, and products around the parks. So I always take advantage of such discounts and opportunities and bring along anything I may have when it comes time to embark on my trip.