It's worth noting that our rules are specifically for autograph sessions.
RE: Gifts/Cards. Every extra interaction may not seem like a long time when one person is doing it.... but when every person in line is waiting for a gift to be opened, a card to be read/reacted to, a photo to be taken, etc, that really adds up and means less people get through. Our goal here is that as many people as possible have time with the guest they want to meet. Cutting an autograph line is one of our least favorite things, by far. Like we say in the program, you don't want to be that guy, do you?
Should you see a guest outside of those times and they decide to accept gifts/cards, that is completely up to them. But I would still ask people be respectful (I've seen some really rude cards handed to VAs) and mindful that sometimes, guests have somewhere they need to be (like press interviews, which wouldn't be on the schedule).