Was it really too much of a strain to actually type the whole name of the city, and the districts, so that those of us not familiar with every city in the world could have had a clue?
To be fair, although perhaps a bit impenetrable to outsiders, pretty much everyone I know uses airport codes almost exclusively to refer to cities in texts... or made-up TLAs like JKT for Jakarta when the airport code (CGK) is non-obvious.
It's just a habit and I'm sure the GP didn't intend to be obtuse.
CBD = Cajun Beer Draught. Or Central Business District
AC = Air Con. Or DC
TMA-2KTO: Too Much Alcohol 2: Kept Too Cold
OP : One Punch, a great Manga