A) As long or short as you want. Distance from Swan: 1 min.
Get the kayaks and explore the calm lagoon behind Placencia where you may spot a Manatee, rays and, if you are lucky, dolphins.
B) 1 hour activity. Distance from Swan: 60 min. kayaking
Cross the road with the kayak to the open sea side and paddle to False Caye (island in front). Go around the caye and back.
You can also do some snorkeling in the north of the caye.
C) 1 to 4 days. Distance from Swan: 5 min. drive to the tour company.