We took the mangrove kayak tour with Dominical Surf Adventures. A couple of days before we had done a similar tour with another company (Pineapple Kayak Tours). The DSA guide was not engaged in pointing out all the wildlife. He ignored the abundant water birds, and most other birds. There were eight of us on the tour, if you were not near the guide when he explained something, or pointed something out, you were out of luck. He made no effort to ensure everyone was involved. At one point we lagged behind and lost sight of the rest of the group. The guide did not come back to check on us.
We had requested a tandem kayak when we booked the tour and we were assured this was not a problem. On tour day there were two tandem kayaks, but a total of three couples wanted one. We agreed to take singles instead, but told the guide of our request. He told us other people asked for the tandems first(?). I'm contrast to the other outfitter, DSA did not provide binoculars, sufficient dry bags etc. However, the snack they provided at the end of the trip was excellent.