Yet another looking for a story

Hopefully someone will be able to help me, I can't find it with any of the searches I've made so far.

It's a summer camp story series and the main protagonist takes the camp name of "Spirit". One of the girls at the camp has a Hawian (I think) grandmother and they come up with the idea of an Hawian themed celebration for the entire camp.

It's in a similar vein to the Camp Kumoni series.

Any ideas?