This is an impossible task as some states do not have any type of QR code. I think something will have to happen as this is just not doable. I found out that CVS is not a participant in this VAMS/CDC program so it is not possible for us to get the required QR code. I can get the CVS QR code for our boosters, but I think one of the things listed below will take place and this will all go away. As you have read on this thread there is a question on whether those QR codes will work. Just so few of the passengers will have the CDC QR code this will have to be changed.

Either the countries waive this criteria and take the US vaccinations cards. I would think they want the tourist dollars they will get from the ship.
Regent cancels these ports and replaces them with new ports or we have two more sea days.

Personally I would not stress out about the QR code at this time and wait and see what happens. As soon as we know anything we will immediately send out an email to everyone.