Hi Jennifer,
Thanks for your question. You didn't say specifically which Walt Disney World Resort you will be staying in, but the resorts are an experience within themselves! There are pools galore, lots of details around and in the buildings and some resorts even have
Children's Activity Centers, where your 4 year old will have a great time and make new friends.
Another great part about select Resorts is that you may just be able to see some of your favorite Disney Characters walking about. You really could spend all day at your Resort and still have a magical time. I would suggest asking Guest Services of the Resort, once you check in, what fun and exciting options are available there.
I hope this answered your question, Jennifer. If you have any more questions before your trip, please feel free to ask us at any time.
Have a fantastical Disney day!