It will also set the mood of the room to be more observant and respectful of these cherished moments. Have the MC or DJ give proper pronunciations to all those being introduced. A script is well worth it here. Only the last 2 minutes or so of the song deal with the wedding day, start there. I actually watched the Groom and other Wedding Party members pine away with loss of interest when the song began at it's beginning.
People are only human and even the best intentions lose interest.
This may require some extra work on the part of the DJ but this should not be counted as exceptional or cost you more. Extended families created from remarried parents can have the dances consolidated. I recommend a Script or Timeline be prepared to kept some schedule since Murphy's Law will always come into play. Feel free to copy this post and distribute to whomever it may benefit. Everything will usually run a little late.