The bookings include shore excursions, adult dining, tastings, and rainforest room / spa appointments. They open at midnight. It all depends on what you're wanting to do.
We usually DIY or book 3rd party for shore excursions so I don't worry about getting those.
We overall like the MDR food and dining experience and don't want to miss those so we don't book the adult dining (maybe that would change if we cruised frequently enough that we wanted something different).
We haven't done any tastings and don't really feel much desire to do that, so we don't worry about booking those. I'd rather spend my $50 or whatever getting wine/beer/drinks that I know I'll enjoy - not into champagne, whiskey, martinis, etc.
So, at my latest booking window, I only booked the rainforest length of cruise pass. I didn't stay up late, I booked it in the morning when I got up. I'm silver, and they were definitely sold out within a day or two after that. I did end up choosing to book a
DCL excursion at
Castaway Cay, but I did that about 3 weeks before our sailing with no issue. I think many of the excursions (for the ports other than CC), dining, and tastings were already sold out when the silver booking window opened though, there were a lot of complaints about it in our FB group.
