We've been to DLP. Twice. Both visits were add ons to stays in and around Paris, which was our primary interest. Our first trip was in summer, and we went on a day trip to DLP as a way to escape the intense summer heat in the city. The next time we spent 2 nights in early Dec. at one of the DLP resorts at the end of our week in Paris. As a PP mentioned, the park is very easy to reach by train since the park has it's own station. It is absolutely nothing like WDW. More along the lines of Disneyland. And at the same time different from both. If you just go to experience it without trying to compare it to its American counterparts, I think you will have a most enjoyable time.
We were lucky enough to spend 3 days at Tokyo Disneyland and Tokyo Disney Sea in October. This was added onto the end of our 2 week tour of Japan where we visited several different areas and cities. And let me just say this about that- it totally blew us away!! There just aren't enough superlatives in the English language to describe tha jaw-dropping awsomeness of TDS! We stayed at the Sheraton, which is one of the partner hotels there. The official Disney resorts are REALLY expensive. Given the expense of a Japanese trip, it was probably a once in a lifetime visit for us, but I would go back in a heartbeat. But if you consider going, check the projected crowd levels very, very carefully. A crowded day at TDL makes Christmas day at MK look like a breeze.