ESPN will definately be showing it -- and you will find that a lot of the resort bars will be showing it as well.
You can also check out many of the places down in Downtown Disney - lots of them have TV's and will put the game on if you request.
I would personally go to ESPN if you want the "gametime" experience -- one caveat to beware, though...
People in Florida, for the most part, have NO IDEA what hockey is, and most likely you will be watching it totally by yourselves. I often ask them to put on WIngs games while down there, and NOBODY else watches except me. You can expect that there will be zero interest in the all-star game since they don't know any of the players and all-star games are relatively superfluous there. Enjoy, have fun, and make your own party!