The best advice that we followed was....get there early!!! Every single day we were there in line way before the parks opened. We got great parking spots, lots of space on the monorail, the CMs were extra friendly with our kids, we got on most of our 'must-do' rides and....we got to be the Family of Honour for the safari at AK. It is amazing what you can get accomplished at the parks before the hoardes arrive. Besides, I think it is the only way you can ride "Dumbo" without waiting 45 minutes or more.
Also:
-Take water bottles filled with ice. We filled them with ice at the hotel then just topped up with a little lemonade. They stayed cool for a good part of the day when kept in our backpacks.
-Take snacks to the parks. Little people tolerate line-ups much better with some Disney princess gummies to munch on!
-If possible, go for the rooms with the micro/fridge combo. Did we ever save money this way! We went to
Walmart the first night and bought groceries. We brought breakfast and ate it en route to the parks. We often had late lunches or dinners at the hotel, too, then returned to the parks in the evenings.
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Shop Disney outlets. Much cheaper thant he parks for souvenirs. I got a baby tee for $5 and tank for $4.
-Get your kids some Disney gear before you go so they don't have the gimmees.
-Walmart has tons of Disney gear cheap. There's a new one right accross from Orlando Premium Outlets. Cost of Princess Aurora velvet gown at Walmart: $18, at Disney: $65 and up.