In South Africa we will often say "hello" and "how are you?" before ordering, no exaggeration.

Sounds like UK - I've heard people use "you're alright mate?" Before just proceeding with the order as normal

I see/hear that a bit in some British panel shows that I enjoy; the host and sidekick will start with "You alright?" as a general intro phrase.

I like to think of it as the English version of the French 'ca va'.

"Alright?"

"Alright."

To be fair, the NYC version of that is “how ya doin’?”. You don’t wait for an answer though.

Hah, and here I thought I only stick out when I ask for cawfee.

I have been often mocked when asking for a cup outside of the metro area! I means how the f else wouldja say it?