I would like to see the McCanns undergo lie detector tests. I don't know how easy they are to fool but I'd hope to get some definate information from them.
And I would agree the vast majority of Brits would never leave their kids and go out for dinner. Aside from the fact it's wrong to leave the kids I'm sure if you did it in the UK you'd get into trouble. I suppose some people relax too much on holiday and feel safe and take risks they wouldn't normally. As I said though the vast majority wouldn't do it and I know someone who paid for a family friend to join them on holiday so that he and his wife could go out some nights and know their child was being well looked after.