I am looking for some advise. I will be traveling to Oahu for 6 days. I'd like to spend most of my time there, but I'd like to take one day to visit Big Island. I don't want to take a tour that includes airfare so, I thought I'd purchase my plane tickets separately and either rent a car or take a local tour once I get to Big Island. There are 3 things I want to see: The Volcano, The Black Sand Beach, and the Green Sand Beach.
I have 2 questions:
1. If I only have one day (not spending the night), Do you think I can do this on my own by just renting a car and stopping in these 3 places? or would it be safer (and recommended) that I go with a tour operator? I have no idea what is like driving there so, this is why I ask.
2. I've seen many tour operators that include the volcano + black sand beach and other things but not the green sand beach, and I really want to see that. Do you know of a tour operator that would cover all 3?
Any advise will be much appreciated. Thanks!