We ate at 1900 Park Fare on 4/17 for the Cinderella & Friends dinner. The food was really good---a nice selection...much nicer than Chef Mickey's (we ate there on 4/13). Cinderella, Prince Charming, Suzy and Perla (the mice) circulated while we ate. The Fairy Godmother was in the lobby and you could go see her whenever you wanted. The characters were nice but didn't spend much time at the tables. The mice came around twice and Cinderella came around once. She came to our section a second time but skipped our table, probably because she had already seen us. Prince Charming also only came around once.
If you love Cinderella I'd say go but if you're not a big fan then skip it. You can always see Cinderella in Toon Town--she's been there everytime we've gone. We liked the Princess Breakfast at Norway in Epcot much better than the Cinderella dinner. In fact we will do the Princess Breakfast again next time we go and skip the Cinderella dinner.