I have travelled with JY since 2006, I have only put my name on one list that was for a group photo to be sent out, only the manager had the information in the list and she promised to shred it when not needed.
As a general rule I do not put my name or details on anything I do not have to..I am very choosy who I give my personal details to.
So if JY were to introduce a list system in any shape or form, I will not be joining in.
Cindy