And don't forget that after you have taken the monorail from Epcot, you don't arrive at MK. You arrive at the TTC.
Okay here's my take....We've done all the options in this thread a number of times.
The pool at the BC/YC is the best on property, IMO. The sand bottom is totally unique, and the slide is great. That's why we often stay there! We also love the BC staff!
Many folks talk about taking the shuttle boats vs. walking. We enjoy walking for a purpose, just dislike winding paths of the mods. It annoys me that Disney paths are as long as possible!
We are kind of brisk walkers. Walk from Epcot all the way to HS is a bit long, BUT we usually beat the boat, because it is very rare to hop on a boat JUST before it leaves the dock. You wait for the boat to arrive and load. Second, if we don't follow the blue/orange path on Robo's map, we go the pink route, much shorter, Plus a bathroom! We stop in the bathroom AND still beat the boat. (Unless we visit Wyland Gallery.)
That said, we are now in the WARMER half of the year. When it is 90+ degrees and 100% humidity, we (usually) take the boat! It is ALSO important to note that the BWK area walkways are exposed to rain.
We've also done our share of
split stays. Stay in BC area for Epcot and HS. MK is the park all by itself. Stay near MK for MK. Easy if we minimize UNpacking.
Last, I partly disagree with the post I quote. Here's what we've found: IF you plan to leave MK (just) after one of the big parades, at park closing, or (just) after Wishes, driving is better.
The MK tram is a factor. We walk to our car from TTC, because it is much faster.
A car= everyone gets a seat/personal space. The buses are often standing room only. As soon as we are at our car, we get to sit. Our car only makes one stop, and we can leave stuff in the car overnight if we want.
A car =you need a (designated) driver. Bus = no designated driver. A car= carseats for kids, a bus = no carseats or seatbelts.