You'll find that most Conventional wedding planning lists and tips often place this vital To-Do somewhere near the middle or bottom of the list, in some cases it's simply over looked altogether.
The important take away from is, just because it's conventional wedding advise, that doesn't mean it's correct.
In the real world, you should book your wedding officiant immediately after securing your wedding venue.
Here's the real life order in which to should proceed.
Decide on Your Budget
Secure the Wedding Venue -Set Your Date
Book the Wedding Officiant
Now...Order Wedding Invitations
Now you have a solid wedding foundation to work with.
The second priority is to place your focus on the Live Vendors you wish to hire.
Entertainment - DJ
A Planner if needed
Transportation if needed
The third focus now goes to various products.
To Rehearse or Not Rehearse.
Life's Precious Vows Ceremonies