We traveled as a family of four with just one suit case. My husband was trying his best to close it! This was our second trip to Kauai and I think we may have bought too many souvenirs :)
The TSA baggage inspection notices we collect....
I found a "Hawaii Packing List" recently and thought you might be able to use it. The list is perfect except i would add 2 more bathing suits, a t-shirt and one pair of slippahs.
Planning and packing is part of the fun!
My husband did get that suitcase closed. He's awesome!