Might want to visit Frankies to taste the prized Meli Kalima pineapple.
That's on Oahu. I believe he is going to Kauai and Big Island? Some people smart now, and fly direct, bypassing Honolulu all together.
Some fruits available here on Big Island in August: Breadfruit, Marang, Jackfruit, Soursop, Mangoes, Mamey sapote, Mammee Apple, sapodilla, durian, probably mangosteen, maybe langsat.