You can buy extra tickets and with Platinum you'd get priorities both days. Regarding specific day assignments I have to get back to you.
Yes, you can stay in line with them to a certain point but you won't be able to go in the photo room with them, you'd have to wait at the exit. They'll really be out of your sight only for a couple of minutes.
Sorry, but the photos coming with the packages can't be transferred. Also just to confirm (you seem to be aware of this as you say you plan to buy two Gold Tickets, so this is for other attendees mainly): each person on the photo will need a photo ticket.
And please don't apologize for asking questions, that's what we're here for. It's just so many very specific ones at the moment, it takes a while to compile all answers.
Could I ask for a follow up on whether the gold/platinum package photo tickets are specific to a certain day/time slot? And if so is it possible to change them?
Thanks for answering my previous questions too!