It's cold. Wet. Damp. But there will be no lines much as anyone with any sense is indoors. It will get dark early, and the parks will close soon after. But that's okay, because by the time you have spent 8 hours outdoors, you will be begging to head to your hotel and snuggle up under the covers. You won't be able to feel your feet or fingers, you blood will have the consistency of slush ice, and your face will look like you have just spent 3 weeks at the South Pole.
If you do wrap up warm (coat, scarf, gloves, hat, jumper, thick socks, long johns) then every time you go to an indoor ride you end up sweating like it's August in Orlando.
Oh and don't forget the drizzle. That super fine rain that seems like it's not a problem, but somehow seeps to the very core of your body, sapping you of what little heat you have, and coating over surface with a layer of soaking wet droplets making sitting down anywhere a big no.
All that said it's still Disney. I stayed in sequoia lodge, and coming "home" each night to the hotel and thawing out in the bar with a big rawing open fire, and a nice tall drink over ice was amazing.
I think what I'm saying is....it's a bit chilly. Wrap up warm, plan on shorter days and find things to do in the evening and you will have a great time. The Paris parks may not have the sunshine, but they sure look pretty.
