It is part of a special "promotion" called "Flashback Fridays" that has been held for several months now.First stay at POP in September - can't wait! We will be checking OUT on a Friday. Heard that there is a photo booth with silly props on Fridays. Anyone know if this still happens, and if so, what hours? PhotoPass photographers or selfies?
It "probably" will still be going on in September.
The description "sounds" like it is selfies.

http://www.themouseforless.com/tripplanning/resorts/wdw/pdf/PopCalendar.pdf