In a search of past postings it appears that One Pass reward codes are G & M for coach. I checked into numerous flight combo's on ITN and could not find these codes referenced at all.
Am I misunderstanding the fare codes, do reward seats not appear or am I just missing something here?
We are trying to use rewards from EWR to MCO and I am trying to check avail prior to calling OP.

Help please.
Thanks,