Yes!
However, do find the right one.
It's sad but true that wedding planners are probably the most under appreciated and under utilized aspect of the wedding process. There are so many variables and situations that will come up that need to be delegated to someone outside of family and relatives.
Reasons why:
You can't be in two places at the same time (ie. be setting up the reception and getting dressed)
You can't "cue" the music so you can proceed down the isle
You can't (shouldn't) be telling the caterer to charge (pour) the champagne so that your guests have their glasses ready for the toast
I could go on and on, trust me. Give them a chance. It's worth it.
Prime example: This weekends wedding. Bride and Groom, 45 guest total. La Villita Church, St. Anthony Hotel wedding Reception, Amber Hart: My Best Friend Wedding Consulting, result: FLAWLESS EVENT