@Pat271 @Mike-And-Jane0
Ok, thanks for clarifying. I just wasn't sure if the rules for bookings made prior to 15th of March (which is the case with the guest I'm referring to) would still apply if that guest had chosen to postpone rather than cancel.
At the time of the cancellation, the guest's booking was not covered by Airbnb's EC, nor did the dates fall within the Govt ban, nor was the Airbnb calendar blocked, so she could have kept the original dates IN THEORY. The issue at the time was that the course she was coming to do was cancelled, so she changed both her course and stay dates.
From what I understand also, the calendar was blocked for new stays, not existing ones. I had a guest whose stay had already commenced and he was allowed to stay and, in any case, fell under the Government exemptions from the ban, so it was not breaking the law (I read this in detail and it did not just apply to key workers btw). Had this lady wanted to come in June though, yes, probably that would have been against the law, as she was coming from Germany and did not fall within those exemptions. I guess then I would have had to cancel from my end...