Nice gesture by the owner. But as far as I'm concerned - standing (waiting) in line means just that, and requires you to physically
be there. Not showing up, getting in line, and then leaving to either go to work, get something to eat, etc., and have someone there "holding" your spot for you.
Your original intent, and the reason for standing/camping out in line is to be some of the first in line
to get decent seats. It seems that concept has been lost somewhere.
Vouchers? We don't need no stinkin' vouchers!