I'm following up on this thread (two years later, wow) because I'm finally planning to head to Dominica myself! Any additional thoughts or tips you can think of?

I'm planning on going for two weeks - one week staying in the Roseau Valley, the second week staying on the eastern side of the island closer to the airport. I don't have any firm plans, but after a few pretty stressful and unpleasant months lately, I'm very happy to relax and take it slow.

One big question I'm trying to answer is how late the buses run from the airport to Roseau. I'm expecting to land around 3:30pm on a Saturday and would rather take a cheap local bus than spend US$100 or whatever on a taxi, but I can't seem to get a straight answer on how that works. I guess I'll find out, but if you have any experience with buses in Dominica, I'd love to hear about it!