It's incredibly lame of you to try interrupt a Role-Play event such as this - or pondering about it for that matter.
No matter how you spin it or try to justify it, it will still end up looking like a bunch of arrogant kids are trying to ruin it for the other party simply because they are having fun. Besides that, you have absolutely no ability whatsoever to find about the exact time or location of this wedding without meta-gaming, but I guess that just goes to show the quality of your behavior.
And before you go and shout that you are friends with the Order, they would never even remotely think that something such as a small-time wedding would be something worthwhile to mention to the Blood Dragons. They don't even know who will attend since all transmissions are sent to the original transmitter. Just because the "posts" are available to everyone in the "thread" doesn't mean everyone can see the actual transmissions.
But whatever. I will try to get as many of my Faction members online and possibly some other friends of mine to maximize the security. Then we'll see how far this sabotage will be able to proceed before it's aborted.
Lastly, do not try to diffuse this post with your standard "dude chill out, I'm only kidding". Because I'm calm and you are not joking about it - you are seriously considering it.