Just a friendly tip. Even a lot of the private tours are booked up at this point. We chose to go the private route for all ports except Stavenger and Kristiansand. The operator we are using in Kirkwall has been sold out for months. Disney made an itenerary change a few weeks ago, switching the Akueryi and Rekyavik port dates, and I was only able to rebook 2 out of 3 excursions with the original tour operator. For the third I had to switch to a different company. All of our tours are private (as in just the three of us), so that probably makes things more difficult. I imagine a group tour might be easier to still book at this point. But my point in all this is that if someone waits until the
DCL booking window opens to check their availability, they may be too late in some of the smaller ports to book what they want privately.
My advice would be to go ahead and book what you want privately as soon as they are taking reservations. Then buy travel insurance (it was very inexpensive) to cover the cost of those tours. That way you are covered if for some reason the ship doesn't dock. You will save a ton of money over what Disney is charging. We laughed out loud at the prices Disney is charging for private tours (even without a guide, just a driver!). In some cases it's double what we are paying for private
guided tours. In other cases we are paying about the same for a private tour as we would pay Disney for three spots on a giant bus tour.