A bit of a side note for visiting VNP: Assuming there is still lava in the Halemaʻumaʻu crater, you can view the night glow of the lava from the Jaggar Museum parking lot. We showed up just after dark and the place was a madhouse - cars all over - rangers directing traffic - bunches of people. We left, then decided to get up at 4am and drive back there (we were staying at the Volcano House in the park). Only about a half dozen people there when we arrived, and we sat and watched the lava glow until sunrise. It was magical! I would definitely recommend getting up super early and catching the glow in the morning.