I've found the longest wait is for the Dolphin Plunge slide.The Loggerhead lane entrance is a little weird as it shares the line with Tassies Twisters,the bowl slides.You basically make a line to get a tube from people exiting the lazy river,you get a yellow tube to ride the bowl slides or a blue one to just go around the lazy river,I've seen some slightly long waits but nothing too horrible.The most popular attraction in the park has to be the Roa's Rapids fast lazy river which you can ride with or without a life vest which are available at both entrances.The two large family raft rides can also have some long waits at times.The Taumata racer slides,the Ihus Breakaway falls drop slide and the two smaller single or double raft slides can have a wait but I've never had to wait that long for them.