TWIN vs. SINGLE film packs
Do the Twin packs give you 2 copies of each picture? If so, does that mean with a "10 shoots" pack you can only take 5 original photos, but get two copies of each?
No no, twin pack means each box has two sets of film, 10 exposures each, so 20 total. Each picture will be unique, so no such thing as getting copies of each picture for Instax/Polaroids.