The Jarvis sisters make an 11 hour trip from Michigan each year to help with Kool Aid days.
They say it's like killing two birds with one stone.
"We really like volunteering and we have family in the area. This is my tenth year helping out and this is her ninth," said Caroline Jarvis of Coloma, Michigan.
Thursday they decorated tables and helped put together some of the games. They may not live in Hastings but Kool Aid days is still a family tradition.
"We don't get to do it a whole lot, so it's really nice when we get to see everybody," said Alyssa Jarvis of Coloma, Michigan.
"And help out in the community. We do love Hastings, we're just a little bit further out than most people," said Caroline Jarvis.
Workers say there will be a total of 20 flavors to choose from this year to celebrate the event's 20 years.
That means four new flavors.
"The agua frescas. There's a mango and a pineapple. We'll also have three sugar frees on the stand for people who can't tolerate sugar," said Pam Bohmfalk, president of the Kool Aid days board.
There will also be new games for the kids, like a bean bag toss, nerf gun target and a twist on the classic "go fish."