This entire page has been focused on the writing aspect of the wedding ceremony script. It is important not to lose sight that the wedding ceremony is a performance. Specifically, it is a highly choreographed performance with many moving pieces.
This technique is borrowed from Hollywood screenwriters. Oftentimes there are different versions of the same script that are intended for the director, actors, cinematographers, etc. Each version of the script includes information crucial to its audience. The actor script may remove everything but the dialog, the cinematographer script may have detailed notes on the framing, etc.
For your purposes, make a copy of the wedding ceremony script. In this copy add detailed actions and stage directions in a font that really sticks out. Later when you have the words memorized, you can refer to this script for the actions you need to do that go along with those words.
For instance, during the Rings Exchange, you might write "Gesture to the Ring Bearer. Take the ring. Hand the ring to the Groom. Turn to the Bride". You cannot be too detailed in this task.
You may also want to consult with the couple regarding the ceremony performance logistics. The more clarification you have regarding the moving pieces of the ceremony, the better you will be prepared. When it comes time for dress rehearsal, the couple will be impressed!
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