Besides putting on sunscreen, there are many water park safety procedures to make your day less of a headache or a tragedy.There are too many rules to list and describe, so I'll pick out the best ones for you.
First and foremost, horseplay shouldn't be tolerated.
I once watched one episode of a sitcom when two boys and their parents spending a day at the water park. After the mother scolds the boys for bad behavior at the water park, they shove her down a water slide head first. I find it rather funny, but that is a pathetic act to commit in reality. So, I agree with many water parks that don't condone horseplay.
Supervise your kids if they are in your party.
In times when kids or even teenagers get abducted and ultimately killed from recent years onward, this safety precaution is more important than ever. Ride with them when the ride calls for multiple people, for example. Oh, and please don't talk to your friend or co-worker on http://pymt.eu/splash-pads-could-save-your-childs-life/ the cell phone or read on the lounge chair next to the wave pool or even the diaper pool (my term for kiddie pool) - there's a greater chance of abduction or drowning, the latter of which is one of the leading causes of death for especially small children.
Mind the rules.
Many attractions have height or age restrictions, and allowing some baby to experience a tens-of-feet plunge slide or a tube slide twister is goofy, yet wrong. Would you really want to have a kid just 3 feet tall to experience a water slide that has a 4-foot height restriction?
Please measure your kids beforehand so you can get information on which rides to bypass in terms of how tall they are. Also, have a medical exam before you go - health considerations are posted on the signs. Oh, and please follow the instructions (one person per slide, cross legs and arms) on how to ride to prevent injury or death.
Learn how to swim.
Having been educated at a private school where there's an indoor pool and swimming classes, I can't stress that enough. A knowledge of swimming skills can save your life and prevent drowning. Check your local YMCA or recreation centers for lessons. (Make sure it's certified by the Red Cross as well.) This is especially important for small children, who are more prone to drowning than anyone else. (Again, it's one of the leading causes of death in this age group.)
Watch the forecast.
I live in a state where thunderstorms thwart days at the water parks, so tune in to your local news station or go online for the forecast. (I prefer the latter because it gives me an idea of how the weather would be like on my day planned.) Stop swimming at the first sign of bad weather, such as distant thunder or distant lightning. The same is true at indoor ones - it's like taking a bath or shower in a lightning storm!