Thanks for these replies. Yes, I am just starting my research and this helps!
To Turtle06: what I meant by “waterfall excursions” was that excursions in each port have a variety choices as the highlight: walking around a town; whale watching; or going out and “seeing waterfalls”. I think the waterfall ones sound lovely and, based on the ports I mentioned, wanted some feedback as which port I should choose the most enjoyable “waterfall” excursion. Your pictures are great…thanks for sharing!!