My trip was split in two parts 3 days in Disney for the children, three days in Paris for the adults. We had two children with us aged 6 and 9 so the Paris part had to be child friendly, they didn't want to que for long periods and would get tired walking alot, with this in mind I bought our Louvre & Disney tickets before we left so that we never had to que, and booked tours to see Paris by day and by night. But to be honest Paris was hard work, and this was due to the people mostly.
We found it easier to feed us and the children in Disneyland as in Paris near our hotel (Les Halles) everywhere seemed to be shut at the times we wanted to eat apart from non French places, one of which gave my a bad stomach and Hippopotamus which I really liked.
The boat cruises on the river Seine were nice but disappointing, on the one by day the children felt ill due to the heat of being under glass and we had agro trying to get off when it stopped to alight some people, and the one at night was meant to be part of an illuminations tour but it was still light, so nothing was illuminated
I would return to Paris but without children to enjoy the Moulin Rouge and other tourist night life hot spots and would know to expect a snappy answer before I even finsih the sentance.
I would most definately return to Disneyland but this time I would stay there and would plan for a more relaxed pace to enjoy it all.My fondest memory is seeing how delighted the children were to see the Disneyland, and seeing the Eiffel tower sparkle for 6 minutes on the hour, whch I knew nothing about so that was a pleasant suprise.

