You only get one card. And the card holder has to be present. All though you can add addition photo cards to the photopass plus acct to add too the cd. But as far as ride photos you'd have to write down the photo # and the card holder go back w/in 24 hrs to have it added. At least that's my understanding.
That's correct. You can only get one plus card, but you can get as many regular photopass cards as you want. So the photos around the parks would be no problem. The ride photos and character meals would be the things that would be a problem. You don't need any ID to use the plus card so you can hand it off as needed for the ride photos. It would be a bit of a hassle to go back and add ride photos, but I think I would share rather than spend another $70.