For now, I will say "Yes, we do perform wedding rehearsals." Please check back as our site is updated for more information about our personal philosophy on rehearsals, your own need for a rehearsal, and what A Joyful Celebration! rehearses and what we don't.
I will also say to you that it takes a very different skill for a person to run a wedding rehearsal than to run a wedding ceremony.
Can the other officiant you are considering hiring do a good job at both?