Our EBTA departs two weeks from today, and we are already pre-booked for private group Mixology ($15 each), Chocolate ($30 each) and Champagne Girls ($30 each). Those were confirmed by
DCL group coordinator a couple weeks ago (about 30 days prior to boarding) and we also know exact date, time, and location. It is different from booking online (such as a spa treatment or nursery time) as it is a group event if you have enough people. Definitely worth looking into on your rollcall thread if there is enough interest.
Here is a
link to our page one post of these events on rollcall that might give more details if it helps.