A good rule of thumb is to allow one hour for transportation from place to place, up to 1.5 hours if it involves resort to resort transportation (since there will be transfers involved most times).
Of course, AK to AKL doesn't take that long since they are next to each other. I would still allow at least 30 minutes though from leaving AK to what time you want to arrive at AKL - you will be most likely be early and you can check out the lobby / savannah if you have extra time.
I don't know about CSR to Epcot specifically, but I would always plan an hour. And don't forget if you are taking the bus to Epcot FW and your reservation is in WS, it will take you another ~20 minutes to walk to WS to your restaurant (again, depending on where it is in WS).