As soon as they saw the confirmations, the people at the airport should have handled it immediately. They should have never forced them to spend more money and seek redress later. It should have been handled immediately, and without hassle. The later refunds and compensation are really kind of a bandaid, especially where it really took news participation.
People generally go on honeymoon straight after they tie the knot, no?
Maybe I'm an awkward sod, but if I'm inconvenienced by somebody else's incompetent cock-up I expect them to bend over backwards to sort it out. Immediately.
The immediate honeymoon thing is less and less common these days, for various reasons.
I do agree with your second comment.