Discuss with your videographer and photographer what time of day is best for your photos as well as how long your video will be including what elements you want recorded. Be VERY specific in outlining every aspect that you wish to be captured to avoid disappointment or miscommunication later on. Print a copy of your requirements off and hand to each person prior to your wedding day.
Discuss with your DJ or band how long you wish for them to be present, including any specific songs or music you want played and in what order.
Print off a music sheet including all of your requirements and provide to your DJ or band at least two weeks prior to your wedding to ensure that they are able to play this music as well as give them time to ask any questions they may have well before your wedding day.
Talk to your caterer to get an idea of how long cocktail hour will be (if you are including this) as well as what time your reception dinner will begin and come to a close.
Talk to those transporting you to your wedding and reception to ensure that they are aware of when to expect departure and arrival times, as well as if there are multiple wedding parties being transported in the same vehicle at different times.
Make sure you give yourself plenty of time in the event of an unforeseen delay and remember that weddings and receptions often take longer than expected.
When creating your Wedding Timeline always add in extra time just to be careful. There are many things that can happen unexpectedly and by allocating a bit of extra time to each function, you will always be able to maintain your schedule.