With the Clone Wars Avetar, the DH being represented as Darth Vader and the two cats named Luke and Leia Im going to go ahead and assume that you have a Star Wars fan or two in your house. If you are looking for another reason to go to DW you can remind your DH that Star Wars Celebration is being held in Orlando at the convention center this AUG. This will only be the 6th Celbration held in the US in last 13 years and who knows when/where the next one will be.
As far as what resort is better between the two with the young children I'd suggest Riverside the pool is nicer, there is more to do and, you have Yee Ha Bob! I also think a younger family would be able to handle the size of the resort without any problems.