ROADSIDE SMOOTHIES IN HAWAII
Gotta agree with the others. I'm not sure the roadside smoothie stands are that common, certainly not on Oahu. The only one I can think of off hand is the one next to Giovanni's shrimp truck in Kahuku. I usually grab a beverage next door at the Kahuku Superette (great shoyu poke there BTW), but the last time I took a few friends there, one of them had a papaya smoothie which was pretty good in my decidely non-smoothie-expert opinion.
While I agree, in general, with the other responses, I do like Mango Mama's, North Shore Kaua`i, for the fruit and the smoothies.
The stands are not everywhere. In Phoenix, AZ, they do seem to be, but we're talking Hawai`i.
Now, I was not looking FOR them, but last week on O`ahu, I saw a dozen "Jamba Juice" stands (chain that is also on Mainland), and we circled the island every way possible, and hit some esoteric neighborhoods. Does not mean that they are not there, but I did not see them, even on the North Shore and over to Maka`ha. Maybe get a bit of clarification on this tip.
re: Bill Hunt
Thanks all, maybe this will be one tip we just let drop. We're on our way in the morning, looking forward to putting all your great info to use. Plans are fairly loose still, though we do have reservations at Kilauea Lodge and Merriman's on the big island. I'll try and drop a note when we get back if there was anything memorable.