Surprise! We found our friends Greg and Kathy on Indigo when we stopped at Union Island. They showed us around, and we all went to Happy Island for rum punch sun-downers.
The Tobago Cays are a reef system and marina park between Union and Mayreau islands. Except for a few low islands, you're exposed to the whole Atlantic Ocean, but the reefs break the swell. John went ashore to check out the flora and fauna.