I don’t think that taking a photo while traveling is ruining a vacation. I think taking photos help you remember the time you were there and experience it again at a later time in life.
I know when I was in the service and was stationed in Germany I wish I had access to a camera. I was over there before the smartphone era and the Internet. Now it is hard for me to remember what I experience unless I saw a photo of a location I was at and those are taken by others.