The flowers will have water in all the vessels, but traveling with them can cause spills. When they get where they’re going, give them a little drink of water to ensure they stay fresh for your day.
Keep flowers in a cool room away from direct sunlight until the day of your wedding/right before they need to be placed. DO NOT put any flowers in the fridge except for boutonnieres and corsages.
If any blooms like sad or droopy before the ceremony, just pluck them out