Don’t. Everything will be fine. Before a con, there’s always some fans on here saying they’ll be the boldest fans ever and will ask this or that and then there are other fans writing long ass posts about how to behave at a comic con and how we should all have boundaries blah blah blah. All of that is like spitting in the wind. In the end, no one is bold or stupid enough to do something very inappropriate and nobody needs to be told how to behave. Gillian and David are not made of sugar and they’re not new to this industry. They’ve both done countless cons and none of them have been traumatized so far. If anything weird ever happens, you can trust them to deal with it. Don’t worry about them and enjoy the most out of it!