Concerts at Wet n Wild

How do concerts at wet n wild work? Are Ubers to waikiki reliable so late at night?

Also I saw it is a water park. Do people wear swimming suits to the concert and go into the water? If yes, is there a place to shower after? Is there a place to lock your stuff during the concert/swimming? Considering getting a ticket to a concert but not finding too much information and scared to get stranded at the water park hahaha. Thank you!