My husband and I read our wedding ceremony script together once our officiant customized it for us. We read them maybe twice and I emailed a copy to him and kept one for myself. The weekend of our wedding I reminded to my husband to to read them an just know when certain things were going to happen. For example we had a rose ceremony for our mothers since we were both raised by single women and of course when to say "I do". I mean you're already nervous and feeling all sorts of ways so its just best to know. Cue the part where the officiant asks my husband if he'll take me to be his wife and he says "Yes" with the absolute biggest grin of his life, my poor baby! Seconds later that grin disappeared when my response was "I do", at the moment he felt so bad but its okay because well we still got married!
It was in no way, shape or form something that ruined our day but at that one moment my husband felt bad that he didn't say I do and no we joke about his Yes and my I do.