I also visited Hawaii last year. It was my first time there and I look forward to going back. My photos of the fabulous quilt shop that I found there and where I left a large chunk of change, are posted on TQS' Show & Tell under "World Quilt Shop Tour". Anyway, while there, I did learn from some Hawaiian quilters that they use a slightly thinner quilter's cotton fabric called "Fiesta Cotton" for their appliqued quilts. The thinner cotton is much easier to needleturn than "Kona Cotton". So, of course, I had to buy some of it. Unfortunately, I wasn't in Hawaii long enough to schedule a quilting class.
Regarding Amish quilts, I spent an entire day in Lancaster, PA and could have enjoyed staying all week. I highly recommend a trip there to anyone who admires Amish quilting.