Walk to the TTC to get a direct ride to Epcot on the monorail. Saves a ton of time. Depending on which longhouse you're in, you may even want to catch the monorail/ferry from there because it could be closer than the Great Ceremonial House and the resort launch dock (mostly applies if you're staying on the DVC side in Pago Pago). If not going to the parks from TTC the monorail is better for rope drop ime.
When you're not in a rush for rope drop, I like taking the resort launch to MK. MK is the next stop from Poly on the GF-Poly-MK route. At the end of night it's kind of a crapshoot. The resort monorail line is usually horrendous because of non-resort guests jumping in it to go to the TTC. One tip I like is to walk to CR and catch it there. Usually never anyone there and not much longer of a wait. But I tend to prefer the resort launch at park close, you don't get the TTC folks in that line. If you're not too tired though you can walk back at the end of the night, the GF-MK walkway should be open again by the time you go.