Hello! We went to La Nouba in November with our twin sons, age 8. It really was a highlight of our WDW trip. We're from Canada (as is Cirque!) and my husband and I have seen a number of their shows. There are little things they've twaeked to make this show appealing for families - no intermission (straight 1 1/2 hour), everything movies smoothly along, great variety of acts (daring to artistic to comedic and so on).
Both boys loved the show, but interestingly, they had totally different favourites. One son was amazed by the athleticism of the more daring acts (esp. the bicycle act, the tumbling and the silk "swing" act). The other son was completely taken with the clown acts and had the audience laughing with him when he simply could not stop laughing!
We had great seats in the wheelchair seating (clown boy has cerebral palsy), but lots of posters here say that there are no bad seats. I can see why - the setting feels quite intimate.
If you decide to go, enjoy!