Watermill Ceremony Rehearsal

I am having both my ceremony and reception at the Watermill, and they told me I do not need to have a rehearsal dinner the night before b/c we will do the rehearsal a few hours before the ceremony the day of the wedding.

Are there any past brides who did this? How did it go? Are there any brides who are planning to do this?

I am a little nervous about waiting until the day of.