4 years ago I went to Kauai twice in a 6 month period. The first time my most used lenses with my 7D were: a Rokinon 8mm Fisheye (corrected in post), a Tokina 35mm macro and the Canon 70-200 non-IS. The 2nd time, my most used lenses with the 5Dc were: a Tokina 16-28, a Canon 50 1.4 & the 70-200 non-IS. Both trips I brought along my 100 USM Macro, but used it less than 5% of the time.

I had wished I had a CPL or ND filter attachment for my UWA/Fisheye lenses. Both trips I brought a tripod, but the 2nd trip I picked up a travel tripod.

Have a great trip!