A few years back, I made a python program that searched free-for-commercial-use Google Images and auto-adjusted them to fit Amazon Merch shirts and uploaded them to Amazon. This was, of course, a violation of their terms of service.
It sounds like you're anxious about leaving some people out of your wedding. Your group already has a habit of not inviting everybody to everything, so you shouldn't read too much into it happening again.
Yellowjackets has broken containment?