will be going to tokyo from 29 dec to 11 jan .. any nice events or place to visit ?

I read few posts back .. Should i still get the JR railway pass even if i plan to visit somewhere out of tokyo on 1 day trip ? not sure where yet though except for kyoto at the moment.. of course planning to go to disneyland as well.. are there any better pass worth getting ?

I might be planning to get a sim card as well which has data .