Just wondering what your thoughts are regarding transportation to various sights around Waikiki for a large group of 12-16 adults. We're looking at going to things like Diamond Head, Hanauma Bay, University of Hawaii, etc. The Bus is an option, but booking a shuttle/bus will be more efficient.
Any recommendations and your thoughts on this being cost effective versus The Bus? I know it will be more, just wondering how much more. Car rentals are out.