aisle runner help -- xp bhb

I am going to do a handpainted aisle runner. Forgive my ignorance, but does the aisle runner only get laid out AFTER the bridal party processes in so that I am the only one who walks on it? That's what my mom said , and I'm questioning it.... we're getting married at the hall.... Also, would I make it so that you can read it as you are processing down the aisle or recessing out?

The pictures people have posted of custom ones show it so that it's as people are processing in, but if it isn't down as ppl are walking in, how does it get read???

Thanks!
Jennifer