I am planning to go to Disneyland for sure, wondering what to do the other day? I am a drink lover :P
If you're only spending two days in France, I wouldn't waste too much time traveling elsewhere. So I'd say Paris, or if you wanted to travel just slightly outside of the city, Versailles!
Since the train station is only a two minute walk from the park, and the train takes only 35 minutes to get there, Paris is the logical destination. Even if you've been there a hundred times before, Paris always has something to offer. If you've never been there, going to Paris may make you wish you never spent your time at some theme park.
Paris, definitely Paris.