If I have a DBCFREE voucher from a vol. bump.

It says "must ticket" by May 1, 2009 - does that mean travel must be complete by then?

If I am premier status and get E+ under normal circumstances by using this voucher will I get E+ seating?

It says not upgradeable BUT is that true or are there ways to upgrade like mileage, check in kiosks?

Thanks