Games are not an issue. Blu rays can be but you say that's not an issue for you.
I had a similar issue as I had a PS3 in the UK before moving to Hong Kong, where I bought another PS3 slim. My UK games collection were all fine. The films were a problem, which was really annoying until I found a work around.
I've now moved back to the UK and all Hong Kong bought games work fine on my old PS3.
The one really annoying thing though about the Hong Kong system is that the O and X buttons are reversed and I can find no way to change this.
That's great to hear, the games were the main issue of mine. Thanks for the help.