Rehearsal/Dinner

Hey Becky!
Normally you do not invite the photographer to either the rehearsal or the dinner.
If he/she is a relative or long time friend of the family and is doing this as a favor to you or at a very discounted rate, then it would be a nice gesture to invite him/her.
If he/she is an amateur photograher, you might consider inviting him/her to the rehearsal only so he/she can see the layout of the ceremony site, the lighting, etc.
Also, it is a great idea to give him/her a list of all the photographs you want taken, including names of relatives, a week or two before the event.