My brother and I dove with Nature Island Divers and it was a great day. It was maybe a 15-20 minute dive from the cruise ship to the dive shop and then we did 2 amazing dives. Of all the ports, this was the one for diving! In between dives we were back on land and walked down the small main street of Soufrier and had a homemade fried dough snack and a couple of sodas. Again, the downside was that there was no camera bucket on the boat.
The rest of my family did the Roseau Valley Treasures tour with Bumpiing Tour. They had a great time, but it was definitely pushing the limits for my Mom. She is in good shape but wasn't expecting having to climb a rock wall and jump into the water from a cliff at Titou Gorge. Only AFTER she did it was it explained that it was optional, so just know that if you go.
Read Kryssa's full Celebrity Summit cruise review
Nature Island Dive