The best way to do this is get yourself a wedding planner or close family friend who can help you throughout the day - keeping you and your wedding party on task and on time.
In the end, it's your wedding. You can do what you want. But if you want more out of your photographer, then you need to have a good gameplan for the wedding day and stick to it. If you plan to start pictures at 2pm, then make sure you are ready for them at 1:45!
We've had couples who have been 1-2 hours late at times. All this does is put you way behind schedule and in the end it will mean less coverage for you, and in a way, wasted money. We really don't like to see that happen. We want you to get what you paid for and we'll do everything we can to make sure that happens. But if you're an hour late, there's not much we can do to make that time up.
The wedding day goes fast, so make sure to have a plan and stick to it as much as possible. You'll thank yourself later.