I read it as not required for anyone -- namely because they don't want to hype these options and get people interested, then at booking those potential customers are frustrated and disappointed they discover more rigorous requirements. That's the kind of thing that needs to be upfront so people know what to expect.
While certainly possible, this will be a logistical challenge for those driving in to the cruises. What may work though is, you go from X to Y and then back to X and then back to Y and so on - but you sell B2B cruises for those who are parked at, say, Southampton.
Good question, and I think not. Other cruise lines doing UK-only cruises this summer are requiring vaccines, but mention of such a requirement was conspicuously left out of the announcement. To me that means it won't be required. Since DCL caters to so many young families and will be doing other "extensive covid testing" they may not require it. No use requiring something that isn't yet available to half your passengers, it would actually create extra work to determine who needs testing vs who is vaccinated. Just my thoughts, of course, until we hear more specifics from DCL.
