They had a good time. A storm hit about 5:30 PM and they evacuated the guests to three different parking garages for an hour to an hour and a half while the storm blew over. Then they were allowed back for the rest of the concerts.
The city had a plan for that just in case because they didn't want any problems like what happened to that outdoor concert in Indiana a couple years back. When the storm hit, security told everyone how to get to the garages and held up a set of handcuffs in the other hand for those that didn't want to go...