Hi there Connie. It's always nice to answer a question sent in by a fellow North Carolinian!
In order to save space and avoid the curious eyes of your little ones, I would suggest that you consider mailing a package to your resort and having it held for your arrival. If you give yourself enough time, you should be able to ship it ground service which is the least expensive. However, you'll want to estimate carefully due to the mail slow downs that typically occur over the holidays.
You'll want to address your package like this:
1. The person who is the LEAD name on the reservation C/O
Disney's Art of Animation Resort Front Desk.
2. 1850 Animation Way
Lake Buena Vista, FL 32830
3. Write HOLD for guest check in and the date 12/23/12. You can add your reservation number too, but this is not required.
When you arrive at the resort, simply discuss with the Front Desk when you'd like your package brought to your guest room. That way, you can arrange for delivery when your children are napping or perhaps at the pool with another member of your travel party. My guess is that you're hoping for a Christmas Eve surprise. If that's the case, you'll want to explain your plans to the helpful cast members.
Thanks so much for visiting us here at the Walt Disney World Moms Panel! Please feel free to send more questions my way prior to your December trip!