Hi Melissa,

Tennis shoes were fine for us on Trails of the Ancients. Actually, Mark Eddowes wore flip flops! Not recommended for us regular people.

I'd just take rain ponchos. Ours (never used but they've been to lots of places!) are small enough to fit in sandwich-sized ziplock baggies. I remember seeing some umbrellas for passengers to use. But, I don't know if they had enough for everyone.

It depends on which 4x4 tour you are on, maybe. The Bora Bora one we did was quite a roller coaster ride! Lots of fun. Fortunately, I was in the front seat facing forward. The seats in the back are side facing. There are canopies that cover it in case of rain, I guess. We had someone on our ride who didn't want the canopy rolled up. She wanted sun protection. So, it's not always the case that the jeeps are totally open. I wore my Relief Band just to be sure I didn't get sick. If you aren't familiar with them, check them out. I love it!

Have a wonderful cruise!