Thanks PapaBill for the suggestions.
Our cruise is Oct 6th. We will be in Maui on Oct 11th and 12th.
One day I figured we could go to Lahaina, Hilo Hatties, etc and the other
day go sightseeing. My only reservation about going to the volcano you mentioned
is the warnings I have read about people with respiratory problems. My dad
had broncial pneumonia in July. He is steadily improving, so I wasn't sure if the
high elevation would be bad for him or not. The beaches you mentioned sound
good, are they crowded? Do any have tide pools?