We did this with our daughters who are 2 and 4 on Christmas day this past year. We had done it before at
Disneyland in CA and they loved it. If you can pay in advance, I would do that - it is VERY expensive! It might be something we do once a year or so. Neither of my girls really ate their food - it's too distracting to have the princesses roaming around. It's also difficult as they're used to American food and this was a little different. DH and I thought the food was decent (much better than the food at the princess meal at DLR). You get to see Cinderella when you first come in - we got there early so she spent quite a bit of time with our girls. Then early on for the meal (and actually throughout the meal), Suzy and Perla will come out and spend time with the kids. Then you will get to see two princesses and their princes. We saw Ariel and Eric and Snow White and Prince Charming.
If your girls are into princesses, I think it is really a fun thing to do. Our girls were dressed up in their princess dresses (one was Ariel, one was Snow White so they were happy to have met those princesses!). We noticed that the majority of the people eating there seemed to be doing it because it was a "nice" restaurant rather than to enjoy the characters. So, we found that the characters really paid a lot of attention to our girls because they were by far the youngest there.
I don't know how to post pictures so if you'd like to see some, let me know your email and I'll send you some.
Our last trip we didn't see any princesses and I thought the girls would be disappointed but we went to Cafe Mickey twice (SO MUCH CHEAPER - if you don't do the menu plans) and they got their fill of characters there. Two trips to Cafe Mickey was still far cheaper than one trip to Auberge!
In comparison to the princess meal at DLR in CA, it was kind of a disappointment because we got to see 5 princesses there! Oh well... at least the food was better!
If you decide to go, I'm sure you'll have a great time.
angie