The suites are better IMO than the little mermaid rooms, but they are still a lot more expensive than others. I find it hard to justify paying $350 a night for those suites when I could pay $400 for deluxe... you know? But it's all about what fits your style.
Our first trip with DS was at all-star music when he was 4. And it was PERFECT. We were able to go for cheap (with a discount too) and still able to fully immerse in the disney magic. Of course, now we're ready to get back to experimenting with new resorts, but I'm so glad we were able to go cheap and get our first disney trip as a whole family. Have fun with DD2!
~Cari~