I saw the show two nights ago, and really enjoyed it. It was quirky and peculiar, but whimsical and cheerful. Like others have said, the music did all mesh as one in my brain after the show, and I completely agree with what WestCoast331 said about the score being a la Fun Home. There are many elements to be smoothed out before it goes to Broadway, but I really enjoyed a lot of what they already had. The set is wonderful with everything slightly set at an angle, forcing you to look at things differently just like Amelie does, and the use of projections was phenomenal. I felt that Phillipa did a great job capturing the spirit of Amelie in the movie, especially when she'd turn to the audience with a sly, knowing grin, as the movie character Amelie does. I sat in the back corner of the orchestra (fourth row from the back, all the way on the side) and had a perfect view.
I've never seen the Ahmanson stagedoor so crowded as it was the night I went, but it was very well organized, with everyone lined up down the block. I ran into Steven Pasquale, which was a pleasant surprise (I've heard he's rather elusive but he was nothing but kind!), and Rebel Wilson also came out of the stagedoor. Pippa was incredibly gracious with everyone, taking time to chat and engage with them while signing. She was refreshingly down to earth. I'm told that if you go on a night with very few people at the stagedoor she does take pictures.
Someone asked about the merchandise. From what I remember, they have blue shirts with the logo and Amelie (not Pippa) on them, a pink Gnome shirt (not sure why they're trying to push for the gnomes so much, since it's a very small sub-plot), magnets, and possibly posters? I got a free poster, but it was so flimsy that I'm unconvinced it was something they sold.