I've booked the dogsledding excursion through two different companies (not through the cruise line) for 8/25/2022 out of Juneau, and both companies have already told me that they're cancelling my excursion. Apparently, there has been a lot of rainfall and camp conditions are deteriorating, so they decided to cancel all excursions after a certain date.
That being said, my cruise line is still offering multiple dogsledding excursions. I tried calling them so see if they were confident that they were going to actually move forward, but no one could give me a real answer. I'm hesitant to book through the cruise line and potentially miss out on another excursion should it be cancelled.