Ok, I'm guessing you are not staying onsite. The parks are open to the public from 9 in the morning till 10 in the evening (Studios closes at 9 in the evening). And I'm also guessing you want to do all the rides, thrill or not.
Are you planning to buy Premier Access (fastpasses)?
Your most important rides are:
Studios:
- Tower of Terror
- Avengers
- Ratatouille (unless you plan to go Epcot)
- Crush Coaster (if you can buy only one Premier Access, buy this ride)
- RC Racer (you might want to use the Single Rider line, as it's a slow loading right)
Park:
- Big Thunder Mountain
- Phantom Manor
- Pirates of the Caribbean
- Indiana Jones
- Space mountain
- Explore the castle & the dragon
Your spare list / to do when you are done with above:
- Small World (almost identical, no Disney figures)
- Alice' Labyrinth
- Casey Jr.
- Pays des Contes Fees (Storybook boats, without the narrator. Nice place to relax for a few minutes)
- Aladdin walkthrough
- Buzz Lightyear (identical)
- Peter Pan (identical)
- Snow White (not sure how identical this still is, but I think ours is still Scary adventures)
I advise against riding:
- Autopia (very slow loading)
- All the Dumbo type rides (kiddie ride, you are not here with kids)
- Route 66 (long and boring, only if you really love Cars)
- Nautilus (terribly boring, especially after they changed the effect to a screen)
- Toy Soldiers Drop (because slow loading)
If you want to do a show and have to pick, either go for the Lion King in the park of Mickey and the Magician in the Studios (both have guaranteed access for 15 euro p/p)
It is possible to see the night time show in the Studios at 9 and then go to see the fireworks in the Park at 10. However, don't do this if you are picky about your viewpoint. (Do not stand on the middle of Main Street, try to find a clear view a bit to the side. The amount of phones are annoying)
There is a Christmas parade, I'm not a big fan. But it's the only one we have at the moment. It runs twice a day, I would say see it in daylight, because you can see the floats. After dark, even when it has lights incorporated into the floats, the characters do not wear costumes with lights, so they are hard to see. If you are into tree lighting ceremonies, there is one, but it's just Santa's voice over.
There is a Christmas Carol show, but I wouldn't bother with it, to be honest. It's okay, but
Disneyland Paris has better shows.
Other tips:
- Download the app to keep track which restaurants are open.
- Familiarize yourself with the park on forehand with the app or online maps.
- Don't get your hopes up too high about food. It's okay, but not great. Due to time I suggest go for counter service or snacks.
- If you want to do a table service meal, either make a reservation, or go for an early dinner in the Village (better value for money, and most people will eat in the park or leave after the first parade, depending on timing)
- There is a little food festival in both Studios and Park (you can drink warm wine, while strolling through the park)
- Keep an eye on ED92, Pixiedust.be and DLP Reports on Facebook, they often have daily reporters in the park. They will show merchandise, snacks, etc.