For example, you can give up the wedding car transfer method, and the newlyweds greet all the guests in advance at the wedding venue.
Take a group photo on the spot, and put the photo on the backboard behind the welcome sign-in desk. Everyone writes their congratulations on the edge of the photo, just like the star signature wall, which is better than writing their names directly in the autograph book.
Then, when exchanging rings, balloons, animals, magic and other feasible ways can be used to convey them, which makes the couple feel that it is an unexpected surprise.
Just a little advice, I hope I can help you.