I saw one of these recently. I'd never even heard of it. Have to admit it was gripping.

In the one I saw, the couple got as far as the marriage - the guy took a call from his mother while they were exchanging vows, so I was a bit surprised they made it to the end of the marriage ceremony.

Also, I learnt something new. I had never even thought about the 90 day aspect and didn't know about the 90 day visa. I vaguely thought it was something the reality show had dreamed up, in much the same way they lock people in a house, or drop them in a jungle clearing.