Sorry about the error 12, lack of space and screenshots.
On the flip side, with your wonderful 'imagine if you will' scenarios filling my head, it was a typical sims wedding.
Nobody did what they were supposed to, nobody sat in the chairs you had painstakingly arranged (hours, hours of work!), and most of the guests were not wearing the clothes you intended for them to wear.
And despite all of that, when you were just about to give up, your sims got married and one or two poor guests will cheer and throw rose petals to the ends of time! lol
As for posing sims, I too have given up! It's an impossible task that only leads down the road of Insanity!
Congratulations Aria and Mario, um, Ario? At least you two got some face time. And what a face it is Mario! I do believe he has some Goth in him somewhere!
Congratulations Dawn and Derick, on your wedding day with no visible mementos. Better luck in the next town! I will be devastated if there are no toddler pics! Just saying. lol