hey! hey! hey my fellow simmies! There was an update today! I just did it and at the wedding arch the "blocked" option totally disappeared but when I called my NPC partner over and tapped on him, there was a "Here Comes The Wedding" option that is 8 hours! I just started it! I hope it works out but u guys do it too yo!!! (yayy!)
Edit (Update): MY FRIENDS!!!! IT WORKS!!!! MY SIMS ARE MARRIED AFTER THAT EVENT! I'M IN TEARSSSSSSSSSS!!!!!!!!!!