Great experience

Pros:
Friendly and helpful crew members, and great communication from the captain when we encountered some dolphins.

I enjoyed the pulled pork for the lunch. Very fresh.

The snorkels they provided were way better than what you get at ABC stores for $10. Very easy to breath with, and I never got water inside the snorkel.

They provided great floatation devices. Noodles and belts. Made it easy to focus on watching the under-water world.

Cons:
Too much time spent on the way. I would like to spent ~30min more in the water.

Tips:
Bring your own disinfectant wipes to further clean the snorkel if you are concerned.

You can rent a GoPro on the boat to take video/photos under water. I tried water-proof bag with my cellphone, but it didn't work well.