Hi! I live in Germany and I have been to
Disneyland Paris many times. In WDW I have been once, in 1997. And next week I will visit Disneyland in Anaheim for the first time!
I will start with a few basics....
Accomodation:
First of all, your friend should stay onsite - because you can walk to the Disney hotels, for example for an afternoon nap (I know Americans usually don't walk so much - at least this was my experience while visiting WDW years ago - but Europeans do it. Therefore, forget any Disney hotel shuttles - in most cases there aren't any even if there should be. Well, it's France!).
If you stay at the two cheapest hotels (Hotel Cheyenne or Hotel Santa Fee) it is a 20 minutes walk. If this is too long, you should have a car and just drive.
One side note: I wouldn't choose Hotel Santa Fee -it is really ugly.
If you are on a budget, choose Hotel Newport Bay Club. It looks beautiful (a little like the Yacht Club in WDW), and it is a 10 minutes walk until Disney Village (=Downtown Disney).
If you want to splurge yourself, choose the Disneyland Hotel. The entrance of the DLP is just under this hotel. And it is soooo beautiful. Another big advantage is, that you get one extra fastpass per day and person, which you can use whereever and whenever you want. If money doesn't matter, stay in the Castle club floor. It is first class, and you get a VIP fastpass which enables you to use the fast pass line as often as you want. It is a real treat, especially I you travel in high season!!!!
Season:
Avoid high season (check the French school holidays). DLP gets really crowded during school holidays!
France:
Well, I don't want to be politically incorrect, but be prepared, that French cast members are different from what you are used to. There are, hmm, well, yes, often less friendly. In my opinion sometimes even rude. I would prefer more perfection and cleanness. But that's the French way of life and perhaps I am just too German.... and of course there are also lots of friendly cast members.
Parks:
There are two parks, the Disneyland Park and the Disney Studios:
Disneyland Park: I love it! It is similar to the Magic Kingdom which I have visited in 1997. You will recognize a few attractions, but even if the names are the same, the attractions are sometimes totally different. For example Indiana Jones: It is a roller coaster with a small loop, not a simulator as I assume it is in Disneyland Anaheim. And Space Mountain is more wildly and faster in Paris, with many loops and corkscrew loops.
The castle in Paris is much bigger as in Disneyland Anaheim, well, I don't want to hurt any feelings, but I think it is nicer (at least how far I can judge looking at pictures of the castle in Anaheim). And a dragon lives there in the basement. Make sure to visit him!!!
At the moment there is an evening show, called Disney Dreams. It is just wonderful, the best Disney show I have ever experienced! It is a mix from fireworks, projections on the castle, music, actually I can't describe it, you have to see it. It is soooo great! You should check before if Disney Dreams is shown during your stay, it could be on only on the weekends.
Disney Studios: It is quite small, but nice. Touring the studios will only take half a day. Don't miss Crush's Coaster - unfortunately there is no fast pass for this family style roller coaster. Therefore make sure to be there at rope drop and to do Crush's Coaster first. Don't miss the shows there - they are quite cute! And you will find an old friend, the Tower of Terror.
Restaurants:
Well, difficult, because I am afraid that there are differences between the American and European taste. In my opinion the food in Disneyland Paris is quite okay. Make sure to visit the Blue Lagoon restaurant inside the pirates of caribbean. Reservations during high season are a must!
Please feel free to ask any questions which I didn't answer.
Katrin