I'm very concerned about this new wrinkle with the U.S. I followed all the protocols which caused me no end of anxiety including stay home, masking at work and anywhere outside of my home, missing my family who all live in other cities. I just had my first visit, short and outdoors, with my 86 year old mum since last September because she lives in another city. When they said get the first vaccine available to you which for 60 - 64 age group was AZ, I followed the advice, now that I've been fully vaccinated with AZ, NACI is recommending the second dose should be MRNA. Now I might not be able to travel to the U.S. because they won't accept AZ. I'm at the end of my rope with this. I own DVC, that is mostly where I take my vacations. Europe would be a once in a decade trip because of the cost.