Travelling to Paris from Charles de Gaulle on the 31st December we will be there until the 4th of January. The hotel that we stay in (Les Plumes Hotel) is a bit of a walk from some of the attractions so was planning on using the metro also was thinking about going to Disney land one day. Would someone please advise me on what tickets I should be purchasing as I'm completely stumped even though I've read through multiple websites. Am I better getting a 5 day pass sort of thing, just buy tickets at each stop?? What zones do I need to buy for?

ANY HELP WOULD BE GREATLY APPRECIATED
THANKS IN ADVANCE!