Ha - I suspect word has got around and there's probably 5 "coffee's" there now....the flat white (old, with droopy boobs), the trim latte (young but no idea), etc...
Yes, watch out for the switcharoo's and also go prepared to stand your ground - my first enquiry had me in the door and on the bed before I could say "I've just come to order a coffee....", and by a hardened old campaigner. I must have looked too nice! I went ahead just out of curiosity ('cos you never know), great massage but the rest was pretty ritual.
What are the best times to try for more veriety, mp.nets? It's cheap and worth the occasional punt, I think.