I booked it right away. But I switched cruises when they switched ships and was able to book it on the new cruise a couple months ago. Then they canceled the excursion completely because the boats weren’t available. When they re-added it I was able to book it again. It’s one of those things that sells out, then opens back up, then sells out, then opens back up. When they had the sale a couple weeks ago I was able to cancel and re-book. They also have it listed under Seattle even though it’s not Seattle. If you know you want to do it I’d just book it right away to be safe. But they were advertising it today in the fun ashore thing so I’m guessing they have spots available again. CD Andy is on one of them.