We went 2 years ago. A once in a lifetime experience.
I think we had a good time overall. I’m certain we took our own food and drink in with us in bags and the pram (not blatantly, but also not hidden in body cavities or nappy bags or anything). The staff were laudably French in this respect, and similarly in their relaxed enforcement of the No Smoking policy. We don’t smoke and weren’t bothered either way, but I liked the way that the “Je ne mange pas votre shit food, j’adore les Gauloises, et que est-ce que vous going to do about it, garcon?” attitude was tolerated.
We all enjoyed picknicking outside the gates on some hilly grassy bits – it was a rare chance for the kids to play freely rather than queue up for rides. We didn’t quite apreciate how organised and regimented it all is until that moment.
The place next door to the main park (Disney Studios?) was good. So was most of it, to be honest. Not trying to put you off! Amazingly, the parades and autographs from gap-year students in furry costumes were genuine highlights.