Just wanted to pass on some thoughts I frequently have while browing this forum. So many people seem to have every single minute of their trip planned right down to the nth degree, ie Diamond Head in the a.m., shopping, 1 hour beach time, happy hour here, dinner there, etc. and then do it all again the next day.
I am no expert by any means, but have been going to Hawaii almost every year since 1974 and some of the very best memories I have are those spontaneous events that just fell into place with no planning, just wonderful memories of food and people and beaches. I guess what I'm trying to say, is don't stress too much, just go and enjoy and make your own memories. Hope this makes sense! Aloha:)