This was a great trip - we had a nice ride out to reef - excellent crew that took good care of us and plenty of water on way out to drink - we saw a lot of reef fish - felt like finding nemo :)
The catamaran holds a lot of folks so takes about 15 minutes to get in water so really only about 45 minutes snorkeling
The ride back had open bar - but also soda as well - bring your own snacks
Smooth ride for those prone to seasickness