There is more info up on the site now. Marvel and Frozen nights, one stage show, character “events”. Nothing about having to book these yet. Also I believe the U.K. guidelines say no more than one third or 1000 rooms can be booked, whichever is
lower.
Primarily everyone over the age of 18 must be fully vaccinated, with the last short at least 7 days before sailing. Crucially though it doesn’t yet say how guests will prove this, it just says D L will contact guests beforehand to tell them how to do so.
That really means a lot of families won’t be able to book. The U.K. should have offered all adults their first shot by the end of June, but with a 12 week gap between first and second shots that means a lot of the 18-50 year olds won’t be fully vaccinated in time.
Plus there is no “proof” of vaccination here. No card with dates and stamps, nothing. Vaccination passports are a “maybe” and not before June at the earliest. The only way to prove that you’ve been vaccinated is to get a copy of your health record from your GP - and I have no idea how long that would take or whether they’re even doing that right now.