This is a question I get asked from every couple, and the answer is different for all. You may just be having a legal ceremony if your main celebration is overseas. You may be having a very religious wedding with a few readings and family customs.
You may be marrying for the second time with Children involved. Each couple I have married has always commented on how fast it seems to go.
But no matter what your ceremony will contain or how long it is, it is important that it is just how you want it to be, and that is why my special saying is YOUR WEDDING YOUR WAY