polaroid pack camera

after you put in a 10pack of fuji film in a pack camera, can you remove them from the camera or do you ahve to use all 10 before opening hte back again

there's a pack camera for sale lcoally taht isn't tested, so i was thinking of bring a 10 pack of fujifp3200 and trying out one shot to see if it works, but i want to keep the 9 for later

Do you have a dark changing bag? If so, with difficulty, you can remove the pack halfway, put it back in its foil wrapper, put electrical tape over the tears, put the pack in the box, seal it with electical tape. Worth it? I don't know. Are you bringing a battery too? How much are they asking? A pack of FP-100C is only $7.89 at B&H.