Strong and Constant Currents

If the text of Strong and Constant Currents is resolved in an inland land (e.g., due to Let's See What Happens), can it move Dahan?
Yes.
"One other Coastal land" doesn't re-check if the target land is Coastal — it just means "a Coastal land that is not target land."
Tags: Strong and Constant Currents, Let's See What Happens (Grinning Trickster Stirs Up Trouble), Grinning Trickster Stirs Up Trouble, Locus Aspect (Serpent Slumbering Beneath the Island), 0 more...

If Trickster's innate power Let’s See What Happens draws Strong and Constant Currents, can you swap 1 Dahan in the target land with 1 Dahan in a Coastal land?
Yes, this satisfies the mandate to use "up to" instructions at their maximum value.
(And both Dahan are considered to have moved, even though the ending board state may appear the same.)
(Discussion elsewhere) Tags: Move, Dahan, Let's See What Happens (Grinning Trickster Stirs Up Trouble), Strong and Constant Currents, 1 more...
What does "move 1 Beast up to two lands" mean on Guide the Way on Feathered Wings?
You may move 1 Beast to an adjacent land, then may again move that same Beast to an adjacent land.
"Move" is used rather than "Push" because Many Minds' special rule about Pushing Beasts doesn't apply.
Most Powers which use the word "move" move pieces directly from one land to another without going through the intervening lands - e.g., Wrap in Wings of Sunlight, Strong and Constant Currents. Technically this one does too, but in each case the move is constrained to an adjacent land, so in practice it acts more like Call to Migrate.
(Discussion elsewhere) Tags: Move, Guide the Way on Feathered Wings, Many Minds Move as One, Wrap in Wings of Sunlight, 2 more...