1. No, but you may have an alternate ITV region in the 8xx range.
2. It can sometimes happen, as I've also had that, but for me it's not that often.
3. You can turn this off in Parental Controls. Just be aware that you can't turn it off for recording from the Sky Cinema channels
4. Yes. See
here
5. It may help, but I believe it's a know issue at the moment that I believe is being worked on to stop this happening
6. Yes, via the TV Anywhere apps and website, but you'll need to make sure you leave your Hub on as well as the V6 box itself.