O.k. thanks to good old Google I've discovered there is not a bus between MK and Epcot or between TTC and Epcot (which sucks by the way) So it's either take whatever method you want to take to TTC and hop the monorail there, or take whatever method of transportation you want to any of the MK resorts and hop a bus there, or take a bus from MK to one of the Epcot resorts and walk to Epcot, which really isn't a long or time consuming walk but will land you in the world showcase so if you are wanting FW you are going to walk through the park. Or take a taxi or uber. Whew, what a silly plan that was to not provide buses between the two parks. So you have options, none of them great since the good ole monorail has been known to break down or have to stop to wait for another one to pass. As I've said, I usually take the monorail just because it's the one time we ride it and I'm never in a hurry so it doesn't matter to me how long it takes.