No offense, but by not checking the legality before flight, you're doing everyone who loves to fly drones a huge disservice. If every drone video pilot had been careful and considerate from day one, I'm prettty sure there would be less restrictions today. Unfortunately drone crashes/accidents/illegal flying is more popular and get more views and attention. That makes drones seem way more dangerous than they really are. I mean, especially the more advanced and pricey ones. I totally get thinking it would be awesome to film and that it's probably safe, I mean, no one got hurt this time, right?
If you check and find out that certain shots would be illegal to film and post, but you really want to do it, contact the water park, make them an offer. Make sure you have the licence and credentials you need to fly commercially. That's my thought on this. Your editing was fine and you got some sweet shots, but considering the potential outcome I can't really say I like this. I really want wanted to film with a go pro securely attached to my wrist in a theme park last year. I wasn't allowed, at first I thought it was ridiculous, then I was told why, there has been accidents where the go pro somehow got loose and actually hit someone and injured them, that's a huge liability for the park and whoever has the go pro/drone. And because some dude didn't secure his go pro properly, now no one can film with a go pro there. I think I might be repeating myself here lol. Anyways, happy safe and legal flying.