Emily, welcome to the Disney Parks Moms Panel!
I understand the importance of a budget, and I have you covered! My own friends and family are usually surprised at how affordable a Walt Disney World vacation can be if you stick to the basics. Most importantly, you will still have a fantastic visit. You and your little Princess will have an amazing time!
The Walt Disney World Value Resort Hotels are truly an incredible value. They are clean, have fun theming, pools, food courts, and fun activities! Also, the complimentary transportation provided both to and from the airport and also to and from the Theme Parks and Downtown Disney area also help save money as there is no need for a rental car. My family's favorite Value Resort is Disney's Pop Century Resort. The large food court has many options, the park buses are the most efficient of any resort we have stayed at, other Guests decorate their room windows for all to see, and there are several different pools to enjoy.
Another way I saves a bit of money on our trip is by having groceries delivered to our hotel. We use gardengrocer.com to order breakfast items, bottled water to bring to the Parks with us, milk, and snack items. We still eat the majority of our meals in the parks at Quick-Service Dining locations, but this helps cut down a bit on our dining budget.
Now those souvenirs! My husband and I rarely purchase items for ourselves - but the kids, of course, always want something! We purchase Disney Gift Cards for them before we arrive. This way they know exactly how much they have to spend. They tend to make smarter purchasing decisions, and rarely ask for anything once they know they have already spent their money.
Do not hesitate to visit us if we can be of any more help, Emily!
~Rachel