As much as Northtowners complain about Octagon Express buses they actually have a safety valve that Octagoners and residents of Manhattan Park don't have: the Q102.
The Q102 begins its Roosevelt Island run by heading South once it makes the turn off the bridge ramp. So except for a few passengers already on the bus it usually starts its run at Westview essentially empty and can be counted on for space on cold and rainy days for most Northtowners.
The Q102 after completing it's initial Southbound run from Westview all the way down to the Goldwater Hospital Campus only then threads its way North on Main Street to its Northern terminus at Coler Hospital. After departing Coler it only goes back down Main Street to 2-4-6 River Road and then exits the Island.
In effect, Octagoners and Manhattan Park residents are denied this safety valve.
So when I hear folks complaining about the Octagon Express I usually have to catch myself before joining them as I know if the Q102s are running Northtowners can always get on if their destination is the subway or Tram.
UPDATE & CORRECTION:
As pointed out to me in the comments I was not aware that the Q102's route on the Island switches between the bus (1) first heading to Coler then to Goldwater and then off Island and (2) first heading to Goldwater then to Coler and then off Island. Teaches me to not check the schedule first. Thank you for the comments and corrections. The main intent of the post stays the same that the Q102 does indeed provide an extra measure of service on the Island and at least half of the scheduled trips the extra service gives Northtowners the ability to enter buses not already filled by their Octagon neighbors.