Just there Jan 16 - 20. Used the Skyliner to go to HS and EPCOT. Actually Ubered for our early morning HS. Wasn't taking a chance of not arriving early. We went from HS to AK, so only had to take the bus back to CBR. That night (which was Friday), the bus stopped at Jamaica, Aruba, Martinique, OPR, then Barbados, and finally Trinidad. They were NOT servicing the sides of the resort separately. We were staying in Barbados, but got off at Trinidad, because we ordered food from the QS restaurant.
On Saturday, we went to EPCOT during the day. At 7:30 pm we went out to the bus stop outside of Barbados 33. Waited 10 minutes for a bus for MK. They had to load a
scooter. Then Trinidad, Jamaica and finally Aruba. Then off to MK. We finally arrived at MK about 8:30 pm. They were NOT servicing the sides separately. The ride back they dropped off at Martinique, OPR, Barbados, we excited the bus, so I don't know if they went to the other side. We closed MK at 11:00 pm, so I doubt they were running separate buses.
Sunday, we actually went and got coffee at the Skyliner station, took the Skyliner to HS, then a bus to MK. It might not have been quicker, but it was more relaxing.
The bus ride back from MK to CBR was awful. We left MK before the fireworks (on purpose). Arrived at the bus stop. Loaded pretty quick. Then our drived proceeded to wait 15 minutes before we left. By the time we left the bus was super full, you couldn't move. Worst part, another CBR bus went by, completely empty. We had a Mini-van, almost run us off the road and when we finally arrived back at CBR, first stop was Martinique, but a bus had broken down at the Martinque bus stop. Rather than radio ahead to our driver, he didn't know and had to radio in for "proper procedure". Once Martinique people got off, we got off at OPR, and went to the bar.
Seriously, the buses at CBR are awful. Too many stops, don't arrive often enough. I would stay there again, but just take the Skyliner to HS and then bus from there. Less of a headache.
Bus Order - for AK - Jamaica, Aruba, Martinique, OPR, Barbados, Trinindad
Bus Order for MK - Martinique, OPR, Barbados, Trinindad, Jamaica, Aruba.
Buses were never shared when we were there and it was MLK weekend - super busy!