Our tour guide on the Big Island pointed out many of the trees and flowers. I liked that, because I always wonder what they are.
Bland macaroni salad may be as or more (modern) Hawaiian than kalua pig.
"Henry's Place" on Beachwalk is an unassuming little fruit store with awesome homeade sorbets. Well, the pineapple was awesome. I assume the others, and the ice creams, were also awesome.
Lava tubes are immensely cool.
My presentation seemed to go well, but the real win was the chance encounter in the Ladies' Room with the AIAA Congressional lobbyist who knew about the project I was on and said she'd supported it back in the 2005 timeframe, and would be happy to see what she could do to keep it alive now.
No actual lava was seen, regrettably.