We have been to DisneyWorld many times and have done pretty much everything. I would suggest you DO NOT get the dining plan. It is NOT a money saver! Eat as much as you can outside the park and save your money for a character meal or really nice sit down meal. Rent a car (we like Alamo) and go to the nearest Publix and get water and breakfast bars. If you are going to those other parks you will absolutely need a car. I believe you can request a small refrigerator for you room for a nominal fee. Be sure to get tips from websites like allears net, mouse savers, Easydisney, etc.