My family (6 adults) will be spending three nights on the Big Island and just can't figure out the best way to spend them or where. VNP is definitely a priority for us, as we will have already spent 5 nights on the beaches of Maui. We will be interested in seeing the waterfalls and doing some snorkeling. Most likely we will be flying out of Kona to get back the mainland. Any suggestions/help would be great!