I spent time in Hawaii a lot as a kid, and my brother and I will vouch for BI as being well worth a real trip. Spend a few days in Kona, then drive down via South Point to stay near Volcano at least two nights. Then stay near to Hilo (or use Volcano as your homebase) to check out some of Hilo, as well as the Puna District, which is a gem. Come back up around the island 's east side.
A few things not to miss:
- Volcano Winery
- VNP, duh
- Visit one of the Painted Churches
- Pololu Valley Hike (if you have good knees, it's amazing)
- Waimea town
- Kanaloa Octopus Farm (currently closed but when they reopen)
- Snorkeling at Honaunau Bay
- Kaimū Bay (super cool)
- Puʻuhonua o Hōnaunau National Historical Park
I could go on all day. It's my favorite island by a lot. I love just sitting in an outdoor hottub near Volcano Village and stargazing.