Hi Sybil,
There have indeed been quite a few threads about Disneyland Paris ( it has not been called EuroDisney for many years now ) if you scroll through as suggested.
You cannot really go by other people's experiences as this can depend on many factors - the time of year ( seasons vary in DLP so you don't see the same shows etc all year round ), what kind of weather people had, and how busy the parks were.
You have not given your dates, so I don't know if you are going in the Easter holidays, when resort will be very crowded. Weekdays in term time are much less busy, so shorter queue lines for rides / attractions, but there may be more ride closures for maintenance/ refurb at these times, and fewer show times.
Electrical parades and fireworks are only on at certain peak times of the year, so don't expect to see those at quieter times, and the parks will close earlier as well.
I have been going there regularly for 19 years since it opened in 1992, when our boys were young, and they loved it. They still go when they can, even though they are now 20 and 25. I still go as often as I can afford!
We have also been to WDW Florida 5 times, but still enjoy the atmosphere and compact size of DLP for a few days. You do need at least 2 weeks in Florida to see all the theme parks and waterparks there, so it is a very different type of holiday.
I have answered quite a lot of questions in detail on Mumsnet in the past about DLP, so have a look for those using the search box as suggested, or join us on the Trip Advisor Disneyland Paris/ Marne La Vallee forums where we will be happy to answer any questions you may have to make your trip more successful.
Fortunately you have plenty of time for trip planning. Next year is the 20th Anniversary, and celebrations will begin in April.
You can find me and other DLP fans on this link. You will be very welcome.
www.tripadvisor.co.uk/ShowForum-g2079053-i21935-Disneyland_Paris_Marne_la_Vallee_Seine_et_Marne_Ile_de_France.html
There are lists of Top Questions on both the forum pages - they are not the same, so look at both lists. They should give you a starting point, along with previous topic threads ,then please feel free to ask your own questions if you join TA.
We have a running thread for Prices of merchandise etc to help with budgeting spending money, and you can see menus and food prices on this website which is very good.
www.dlrpmagic.com/planning/
We also have a lot of Trip Reports written by posters following their holidays in DLP, which can be very helpful, so worth reading through some of those with similar aged kids to your own. many include some good tips and advice.
See the sticky at the top of the Topics list for the TRs.
www.tripadvisor.co.uk/ShowForum-g226865-i2224-Marne_la_Vallee_Seine_et_Marne_Ile_de_France.html
Hope to meet you on our forum - it is very friendly.