Fantastic trip, we managed to see Dolphins and Humpback whales which was amazing. The crew were excellent, really entertaining, really knowledgeable and made sure we were all look after. It is an early start and is about 3 hours in total, but we got probably 30-45 minutes watching the dolphins, the crew spotted the Humpbacks on the way back which they were super excited about.
There was plenty of space to move around on the boat, drinks were provided and were really needed, standing on the bow watching the dolphins race in front was special.
I would recommend this to anyone, go you won't regret it. You also get an amazing view of the Pitons from the sea.