Remember that you have hired professionals to take care of your special day/evening and put your trust in them. They have most-likely done hundreds of events and know what to do and what to expect. If you are unsure about something, ask them! I find that when I’ve spoken to a couple that was a bit insecure about how the day would unfold, and given them a well-organized timeline, they tend to relax and start to be confident that their event will, indeed, be a success!
Happy planning and congratulations!! Be happy, in-love, and gorgeous!