Cassian and Azriel totally got married in Vegas at least once.
Nesta : *storming into the room* YOU’RE MARRIED?!
Cassian : *looks up from his uno cards with Nyx* What-
Nesta : *picks up Cassian with his collar* I SWEAR TO GOD IF YOU DON’T DIVORCE HIM RIGHT NOW-
Cassian : DIVORCE WHO???!!
Nesta : AZRIEL OF COURSE?!? RHYS TOLD ME ALL ABOUT YOUR HONEYMOON AS WELL! OR DID YOU MARRY SOMEONE ELSE AS WELL?!
Gwyn : What the fuck-
Cassian : Oh you don’t need to worry about that, we got married in vegas.
Azriel : *rubbing his temples* I thought we VOWED not to never speak of that again-
Nesta : SO??!?
Cassian : So what? A vegas wedding isn’t a real wedding
Gwyn : No that’s just a myth. A vegas wedding is as real as a wedding in Velaris. Like the one you both have in the next week.
Cassian : WELL- I- THE SHOULDN’T ALLOW PEOPLE TO GET MARRIED WHEN THEY’RE DRUNK! NESTA IT WAS NOT ON PURPOSE! We were DRUNK FOR FUCK’S SAKE
Azriel : *tearing up* it wasn’t on purpose?
Cassian : Dude you’re costing me my life here. Just help me out a bit. *furiously whispers* tell her, it was not on purpose.
Azriel : *sobbing completely* it was not on purpose. *runs out dramatically*
Cassian : Wait- Az- I DIDN’T MEAN WHAT I SAID OKAY?! LOOK AT WHAT YOU DID NES! *follows after him*
Nesta : What da fuc-
Gwyn : I know how you feel. Been there, done that. *takes a huge sip from a glass of red wine that appeared from nowhere*