The trip was great for us, as we had a really fun group of people!
There were 32 people on the day we went, and there was no problem getting a seat in the shade(or sun) if you wanted it.The drinks started from the moment we got on the boat, and continued throughout. (not strong, but decent).
We sailed up the coast, and then anchored. People either swam, snorkeled or floated in the water. After that we had a late lunch of soft tacos, watermelon and pineapple and banana bread. We had music playing, people were dancing, just enjoying themselves. And we did return to a beautiful sunset!
I did hear that there were issues with the toilet, but I did not experience myself...