Maybe there is just one official photographer, and the rest are tourists who gathered one by one.
There could be a photo somewhere taken by another tourist with this bunch plus you in it.
And then another photo with him/her, you and the bunch and so on until infinity…
I saw the whole bunch going around Paris taking photos in front of a James Bond style classic Aston Martin, then a limousine, then this in the Palais Royale. It could be an extra service provided by the photography studio… you feel like a film star for a day.