This tour of Portland includes two exciting adventures in one. First, board a bamboo raft for a slow, scenic boat ride down the Rio Grande River. Along the way, stop for an authentic Jamaican meal. Next up: a boat tour of the Blue Lagoon and Monkey Island. Here, the river meets the ocean and you can feel the temperatures of the two bodies of water mixing. Hop in for a swim or relax on board the boat and take in the views.