As a comparison between the last 3 events (Chicken+Beer, Dance Island, and now Waterpark) it seems the Devs need to tweek the Waterpark event rewards.
In all 3 events, a player needs approx 4K tokens each week to purchase everything off the NPC, including honing mats, exp potions, silver, and rapport.
The first island offered 900 tokens for killing the giant chicken every 2 hours plus a daily of 100 tokens for capturing chickens. So just doing each event once a day was 1K in coins.
Dance island offered 3 dailies at 100coins each or 300. That plus a dance event for 200 and a boss event that nobody did due to a fight with your X wife that did huge damage and constant repairs. So 500 coins min plus boss fight after being nerfed right before event over got you 200 more coins. 700 coins a day.
Now comes this event 50 coins every 2 hours for playing with a water gun for 10 mins. Plus a picture with a tree for another 100 coins. So in one trip through you get 150 coins.
Personally, the first was the easiest to max out coins needed per week. But I understand that the Devs want you to explore the event more then 1 day a week, so they came up with the second event. That event maxes out just under 7 days.
However as I stated from the beginning, the new event at 150 is WAY to SMALL of a reward. Yes you can hope to get some more coins if you place 1-2-3 but that’s not what I am saying. To generate enough coins per week to max out purchases, the rewards from the event need to be buffed up.
Now I know somebody is going to mention, just use Alts, or do more CD’s/Uni’s but those are just small enough to say thank you and that’s it. For players who are either new to the game or hate alts, the event is not worth them doing it without help from the Devs.