Whenever I go to Asia, I'm treated like a novelty if I speak even a few words.
This really hurts me sometimes, because I know this and put so much effort try to fit in, but I basically get no praise for that, instead, I get nitpicked for noncompliances.
In a case of some individuals like hotel clerks, that I actually spent some time talking, seeing multiple times a day, they totally understand my situation and didn't give me hard time. (And it was tiny hotel, that didn't really caters to foreigner, so it not that the they were used to it -- funny side story is a few year after that -- perhaps when their son took over the business, they've completely changed to cater to foreigners instead :-) )
But it's also true that people in the service industry are gruff no matter where you go. It's hard to be pre-school-polite to hundreds of illiterate adults a day.