Sorry to tell you, but FAO Shwarz has closed its store in Scottsdale.
For older children, a program or a choice of pools might be important, but for Toddlers...not so much. I would think that as long as there would be enough room for the three yr old to run around, and the one yr old to play; it would be plenty comfortable.
You might want to consider checkign out the room service and restaurant menues; I know my toddler is demanding when it comes to meals/meal times, and a good hotel restaurant can make all the difference.