No worries, I'm usually pretty lax about it. Send me a check...don't care. Want to write up a contract or issue an official government record, yeah you better believe I'm gonna get huffy, because as soon as someone submits official records with my name spelled wrong, I KNOW how difficult it is to get it changed.
heck, even with my wife, her name is 이정민, or Lee Jung Min, or because of our western penchant for Family names last Jung Min Lee.
Issue is, again with our western penchant for a Given Name, Middle Name, Surname, most people would look at Jung Min Lee and then call her Jung, assuming Jung was her Given Name, and Min was her Middle. Unfortunately, that is not the case, her Given name is Jung Min. So to remove confusion we often write her name on Documents as Jung-Min, so as to remove all doubt as to her name.
Sadly, this has bit us in the buttocks as some Government Documents have her name a Jung Min and some as Jung-Min.
This means a LOT of issue for us to correct, and we've pretty much taken the 'Ah to heck with it' attitude.