Thank you so much for your advice! It's always great to hear from someone who has "been there".
jd, I don't think we have time to do both excursions, but I wish we did. The Taku excursion and the Whale & Wildlife Quest were our two favorites and we only have time for one.
I am hoping so much that we see whales from the ship. My husband really, really wants to do a float plane, so at this point, that is what we are doing. We may change our minds. We'll see!
Thanks again CanCan and jd!