No. You can involve lots of special people in your wedding festivities.
Host and hostesses can greet arrivals to the wedding site and hand out programs. The ushers then guide the guests to their seats. Another hostess can help guests place their wedding gifts on the gift table. Or hang up heavy coats on a coat rack. Someone can make sure that every guest has signed the guest book. If your guest book is in a three ring binder, so much the better.
After the bride and groom have cut the cake, your special helpers can deliver slices of cake to the other guests. It's a nice touch and gets the cake served much more quickly than if the guests line up at the cake table.
Ask a few friends with digital cameras to take photos as the evening progresses. The photos can be printed onsite and then pinned to a bulletin board covered with white fabric and trimmed in your wedding colors. Guest can peruse the board and take home favorite snapshots. Since the photos are digital you'll still have your own copies. You could also give a few people disposable cameras to take photos for you. You'll probably get some unique photos you wouldn't ordinarily get. Appoint someone to collect the cameras so you can have the photos developed and your guests don't have the added expense.
Usually the bride and groom leave the wedding reception first. It's a nice touch to ask a few friends to thank the guests for attending the wedding as they leave. If you're giving out wedding favors these same people can hand out the favors as well.
There are lots of ways your friends can feel special and involved on your very special day.