Agree about Reisa. Sam's just a spoilt brat as well. The lads are nice blokes - far better off without the girls, if you ask me.
I don't think the children were in any danger as, like you say, they were watched all the time, and there was a trained nanny staying in each house for all but the teenagers.
I felt quite sorry for the old gent who stayed with Sam and Alex, because she virtually ignored him, yet when Alex took the time to listen to him, he had such a lot to tell people, and I could see Alex really admired the chap.