Well if this doesn't persuade me I'm not sure what would! I never thought of taking the monorail from MK to EPCOT and walking back from there. What a great idea!
Sorry..that should say you can walk to DHS, but it's quite a hike and we prefer the boat. Epcot is merely a hop skip and a jump! We love heading out (and in) the door by the quiet pool. We always request a room close to the quiet pool so that we are near Epcot. This also helps greatly if you are caught in the rain
Walking back through Epcot from MK we've had some of our most favorite moments. The aquarium is always quieter at night, so our girls would just look for their friend the sea turtle. Catching a street show in WS. Sampling through Club Cool. Or even playing in the water geature, because we aren't heading on a busy cold bus, we are walking to our room

. They LOVE doing the Epcot passports, if you haven't tried these, they are the best! More interaction than just getting the mask stamped in each country. They both still look at them almost daily. $10 well spent! We always have a dedicated World Showcase day where we see the shows, shop in the stores, do the passports, but we never get done. So hitting a country in the evening is a relaxed way to end the day.
The ambiance of Epcot at night is just our favorite. I will admit staying that late and still having to transport home would have ruined that magic for us lol. Hubby and I did always chuckle about "swimming against the stream" if we chose to stay for fireworks. We were happy that in less than 10 minutes we would be in our beds, whilst 95% of the people were all heading to the bus bay/monorail.
Also..other things that always persuade us to stay at BC are: s'mores roast on the beach (free), movies on the beach (amazing with fireworks from either Ep or DHS in the background, the pool area...seriously..I can't say it enough. Our kids LOVE the sand bottom pool...but Disney sand is magic I am pretty sure, because it doesn't stick to you like scratchy glue like the beach. The sunsets over the bay. Seeing the Boardwalk all lit up. People in those 4 person bicycles riding down the boardwalk. Entering Epcot via world showcase at rope drop there is virtually no crowd...and since WS isn't open, the walk to Future World is VERY serene. Beaches and Cream milkshakes (walk in and SNACK credit...what?!?!??!). The fun separate kids pool with slide for those less adventurous swimmers. Seeing the fireworks while swimming in the pool (a night swim is definitely a must do!).
I should stop, before I convince myself not to try GF and just book BC our whole trip

lol.