Doubtful. Most people will preorder online and any crowds at the stores should dissipate through out today. As with any preorder or new product rollout, always pays to find a lessor traveled store or a small reseller to avoid the crowds. High traffic stores or mall stores may still have crowds, although I can't imagine "lines" by tomorrow.
I would not be concerned about lines tomorrow. My only concern would be the possibility of pre-orders being maxed out by then. Then you'll have to worry about standing in line on launch day. Why not just pre-order now online?
As others have said, most people will preorder online. I doubt you would have to wait in a preorder line for the Verizon 4S. Maybe a line on actual launch day, but not for a preorder.
I would suggest doing it online. I did it early this morning when the preordering went live and was done in less than 5 minutes. It's really super simple.