In the ancient marriage customs the marriage supper was AFTER the seven days the bride and groom were sequestered. It was AFTER that seven days that all the quests were invited to the wedding feast.
On Jewish wedding customs, lest you ding me about too much typing, I insert here somebody’s else’s take on it, a post-trib pastor. Sorry, he does even more typing than me!
http://answersinrevelation.org/wedding.pdf