FWIW, I've been studying a few of the statistical visitor arrival numbers to Hawaii based on the HVCB data for a project and actually have found that the winter arrivals pale in comparison to the summer arrivals... it was a startling read for me in the data, but does make the most sense given the larger concentration of visitors from the Western half of the U.S. When I compare this to the differences in fares I pay for summer trips vs. winter trips, it makes sense. I've always found my winter trips to/from the Mainland to be cheaper than my summer trips (airfare only).