The way I understand it, anyone who is linked to the AP’s account will have their photos show up in their stream. Because I have over 20 people linked to mine, I get a constant stream of new pics any time one or more of them visit WDW. It helps me get through the time between trips.
If this is inaccurate, I apologize in advance.
PS, if you’re worried, give him one of your mom’s old bands to use for pics only.