I recall that it was only soft drinks for free but maybe rules have changed. Another thread and post by Unterwegs seems to indicate same for IC HK (unless he was referring to GS, but I don't think so)--seems to be the way for the IC GS in Hong Kong:
http://www.flyertalk.com/forum/showthread.php?t=335188
benefits rules say minibar is free--never contested it yet . . .