My concern is that the day before we're in Grenada, we're doing a very long private island tour in Dominica. My family doesn't love going several full days in a row and I'm wondering if it will be too repetitive. (Both beautiful jungle islands. . .) Also, we're not crazy about big crowds and this is Christmas week so I expect he'll have a busload or two.
We're not rabid snorkelers but we've enjoyed it in the past. We will be snorkeling the next day in Bonaire.
So: half-day Mandoo tour or half-day snorkel trip with Aquanauts (or anyone else you'd recommend, but not on our own)?