Hi Ellen! Although I love many of the Disney resorts I have to admit I am a repeat guest at the Yacht and Beach Club resorts!
I think this would be the perfect place for your family looking at the age of your children. You will be able to walk to two parks, EPCOT and Hollywood Studios which are parks that your children will enjoy immensely. The amenities of the Beach Club are many but they also boast one of the best pool areas on property. Stormalong Bay has natural sand bottoms in different areas as well as a large pirate boat slide. It will be under rehab for part of the spring but they hope to keep parts of it in use during that time. There is also a "regular" pool so plenty of opportunity to relax.
Just across the bridge on the other side of the water you will find the Boardwalk area. ESPN Club is here if you have any avid sports fans who need to catch up on the latest scores. Also shops and great dining spots and in the evening street entertainment comes out to amuse you as you walk the boardwalk. Be sure and check out the best fudge in Disney at the sweet shop.
At the Yacht and Beach marinas you will find a variety of boats you can rent to enjoy for an hour on the water. Consider an Illuminations Cruise as well to get the best seat at EPCOT for the nightly show or perhaps an early morning fishing excursion. All of this is right outside your door! Check here for the complete list of
recreation opportunities.
It is a beautiful resort and I hope your family will enjoy it as my family does when we head back to Disney!