Believe it or not, traveling with little ones isn't as bad as you might think. We took S4, who was then S2 to Italy. It turned out great.
The Grand Canyon is also an incredible trip, but your Ds are too young to ride the mules to the bottom.
Good for you for planning a vacation with your Ds. The cool part is that you don't have to compromise with W on the destination. You can give them the experience that you want them to have.
