I think that is the point Paul, This time they have to stay away & stay at home for their holiday.
I think there is much more at stake here than getting a tan & getting the Rides & buying Fairy Floss. If they can't see that without prompting, then they join the other selfish inconsiderate bastards that are quite happy to spread it around en masse.
Disappointing? Yep, but they might be here this time next year to get their somewhat delayed vacations, or dead.
Not a lot of choice is there?

