I like the characterizations. You give them each distinct personality, and while some are definitely less likable than others, and none of them are really very likable in the first place, they are all rather human.

One thing that kind of confuses me. The conversation in the beginning and Franks thoughts at the end imply that this is the first time they've done this, but one bit in the middle seems to contradict this impression.

There was the usual cast - old ladies and old gents on holiday, come to see the miraculous aliens; teenagers who all reminded him of his kids; moms with kids, dads with kids, moms and dads with kids; some dried out accountant of a man with a briefcase; three big guys in bad suits who were trying very hard not to look like very bored undercover policemen; five worrisome-looking skinheads.
The skinheads were a new addition.

Okay. If this is the first time they (particularly Frank, whose viewpoint seems to be the primary focus) have done this, how does he know who the usual cast are? How do they know that the skinheads were a new addition? Or were you taking a more omniscient third-person perspective there?