You weren't wrong.
I think that if you choose to to take more than one quick pic while the line is moving, then you relinquish your spot in line until you are ready to re-enter when you're done with your photo shoot.
That's life. People are so selfish. The whole line should not have to wait so that you have ten pictures to choose from of Mr. Potato Head for your scrapbook. If you want that, it's more than fine, but just accept that you may end up farther back in the line. No big deal.