I am completely on board with Sean being introduced at the wedding as Turan Adin!
The reactions of the rest of the vampires... and Arland, just calmly like, nah, we're cool now, totally allies. Friends, even; we have vanquished many enemies together! We are even sort-of in-laws, since he's planning on sticking with my new sister-in-law, Dina. Have you met Dina? I recommend her Inn. Very invigorating. You should definitely try the coffee...