I had given some thought to doing some creative editing on the actual label to get in an updated description for a cat 23 beer after the closing date for editing. Figured it would be cheating so didn't do it, but if the labels are your entry form I'm sure there's someone out there who's going that route.
On the other hand, there is a bar code on the label. Will they be scanning to get information or manually copying it from what's written on the label?
The labels and all that info is just to identify the bottle with the proper entry number, the important data is all in the database and that is usually used to generate the pull sheets that the judges see and have the required specialty info on them.