Not unless they changed the rules. We've purchased them in advance before at check-in for an E-night that was a couple days away. It was either our 2000 or 2001 trip.
Another hint... If the line at CIty Hall is long, blow past it and go to one of the other redemption sites. At our first E-night it was a mad house at City Hall. So we hoof'ed it to the arcade next to Space Mountain and there was only family of four people in front of us and that was it.