When should the bouquet actually arrive on the day?

Get specific. "Morning" is too vague.

The bouquet should be at the getting-ready location at least 60 minutes before you put on your dress. That gives photographer time to:

• Detail shots (bouquet on the bed/chair next to the dress, rings on the bouquet, invitation suite styled)
• Bouquet handed to bride before final mirror moment
• Walking-down-the-aisle holding the bouquet

If your dress goes on at 1:00pm, bouquet arrives by noon. If your photographer arrives at 12:30 and the bouquet is still in the florist's truck, you've lost detail-shot time.

Text the florist: "Please confirm: bouquet at [bride's getting-ready address] by [specific time, 60 min before dress goes on]." Get it in writing — a screenshot of the text counts.

Backup plan if delivery runs late: have a designated person (planner, MOH) ready to drive to the florist if she's 30 minutes past the agreed time. Cheaper than missing the moment.