I was planning to go and check out RG7 this month as well! I'm from Canada, and have been working in Hong Kong for almost 4 years now. I've only ever been to one convention here though, one of the other Rainbow Galas. I got there kind of late in the day and didn't wear any cosplay, but it was fun to go and take pictures, etc. Started working on my old cosplay again (finally!!!) although it might not be finished in time.... >__>
It would be so nice to have other people to hang out with!!