One of our favorite things was driving the Road to Hana. We were able to borrow the very popular CD that guides you and tells you where to stop and it was amazing. I wish we’d allowed for a stop at the end to stay the night by the black beach, as it was truly marvelous. We also drove up to the top of the volcano-about 1/2 way up there is a HUGE stand of eucalyptus trees, so make sure you roll down your windows and drive slow, as the scent is amazing.
Another fun stop was the Kula Botanical Garden. The best Luau is the one behind the Lahaina Cannery (ask about it ANYWHERE). You may be too early for whale watching, but check around about that as well.
And make sure you take at least one day to just r-e-l-a-x!!!
smkarizona has gotten 1 cheer on this answer.
Thanks! That CD sounds really useful… I’ll look for it.