Soundtheoctoalert - thank you for recommending the TA Marne La Vallee/ DLP forum. I and other regular Disneyland Paris visitors on that forum are certainly happy to answer just about anything that people want to know.
Theme parks do not appeal to everyone, but even parents who hate them can have a lovely time through their children's excitement and happy faces.
The first time we took our son when it opened in 1992, my DH was not really very keen, but was prepared to put up with it for our nearly 6yr old. We stayed for 5 days, and DH had to admit that he was having a brilliant time. Apart from having a good time with our son, he also enjoyed the parades and shows, and the technology behind the rides. After that we went at least once every year, also taking DS2. I still go as often as possible, usually with DS1 who is now 24, although DS2 and DH still enjoy going as well sometimes.
My boys never wanted to eat in Auberge DC but have enjoyed the other Character Dining restaurants. Auberge DC is certainly the best place for interaction, photos and video with Disney Princesses and Princes - ask for a table near the fireplace if possible, as that is where they dance. It is quite expensive 3 course Fine Dining, and the food does not appeal to some children, but the food is not the main reason for kids to go there anyway.
You can see the menu on dlrpmagic.com, and also read reviews and see peoples' photos on Trip Advisor.
www.tripadvisor.co.uk/Restaurant_Review-g226865-d1479370-Reviews-Auberge_De_Cendrillon-Marne_la_Vallee_Seine_et_Marne_Ile_de_France.html
Disneyland was built on previous sugar beet fields in the middle of a quiet farming area, so there is not much else to do unless you have a car and want to explore surrounding countryside and small villages. There is a huge modern shopping mall at Val D'Europe, one stop on the train from Disneyland, where there is also La Village designer outlet shops. There is also a SeaLife Centre here. This land was also owned by EuroDisneySCA until sold recently. There was nothing here before the resort was built.
Be warned - the parks are extremely busy at weekends and school holidays, especially Easter time. The new Magical Moments Festival has just begun, so many people want to see that. Planning your trip is essential to get the most out of it.
I suggest you study the maps of the 2 parks online, familiarise yourself with the layout and where things are, and read about the rides and attractions in both. Then you can make a list of your priorities. You can also see the programme of events online a week in advance, for times of shows, parades, and Character meeting times and locations.
Use Extra Magic Hours from 8am to 10am before the general public are allowed into the park - selected rides in Fantasyland and Discoveryland are open.
It is definitely recommended to make Advance Dining Reservations before arrival if you are going at peak time. Character Dining restaurants especially get booked up very quickly.
You can find a lot of advice in the Top Questions list on the TA MLV forum page, but please feel free to ask your own questions as well. You can also read through Trip Reports written by visitors with kids of the same age to get some ideas of what they did and didn't like - all kids are different, some are braver than others. The Snow White ride is certainly scary for some children as it concentrates on the darker side of the story.
You should all enjoy Cinemagique and Disney Art Of Animation in the Studios park, and I'm sure that you will find that you enjoy other rides and attractions as well. There is a huge variety, it is not like going to a funfair!
The Santa Fe hotel now has Disney/ Pixar CARS theming in the rooms and on the billboard outside - Clint Eastwood is no longer there.
DLP is a massive subject - too much to reproduce here! We can help you more on the link that was given here.