I find it just a bit galling that Disney expects their Photopass photogs to willingly take snapshots for guests using the guest's own camera.
To my mind, it's like handing a TS waitress a brown bag enclosing a PB&J sandwich, then asking her to serve it to you on a Disney plate.
Maybe I'm being too sensitive (having worked as a professional photographer) but seriously, is there anywhere else you would ask a professional to provide their expertise for free using your own materials?
Would you ask a surgeon to perform exploratory surgery on your dining room table using a steak knife?
Would you ask a professional pianist to come to your house and play for your guests on a toy piano without compensation?
You might ask a car mechanic, perhaps, to install parts you bought, but you certainly wouldn't expect that service for free, would you?
If you're asking the pros to take your picture on your camera, I hope you're at least offering some sort of gratuity...