Hi Mr or Mrs Head, nice to see a fellow citizen from Auld Reekie on here. Anyway to answer your question, the site is called cruisecritic.co.uk. Go to the forum section, then Roll Calls. You'll also find a lot of people talking about their upcoming cruises in the cruise line section threads too.
It is actually boards dot cruisecritic dot com. You have to register, but there is a section called Roll Call - you will see all the RCI ships and you just look for your sail date. It is american so expect August 26 to be written 8/26....if more than 25 of you register then RCI will throw you a party with drinks nibbles and free gifts. Worth it.