They don't really give many tips for Disney World, but even though the parks are slightly different, you can use tips for both! I have a seasonal pass & My fiance & I only spend about $100 each trip! Including parking!
WDW packing tips, but would work for any travel. When we went, we packed one suitcase with cereal, snacks, etc, and ate breakfast in the room. We saved a lot of $ doing this, and we had an empty suitcase at the end of the trip for souveniers, etc. And you know, things NEVER go back in the suitcase the way they came out, so the extra space was great.