That is basically to allow any moisture that may still be in there to evaporate and to prevent an amateur/novice from doing something bad. I do vinyl graphics for a living and never leave the paper on because I know "the feel" of the material and don't worry about ruining the graphics by lifting/stretching the material away from the car while removing the transfer tape. I've had plenty of do-it-yourself people come to me and watch me do it and say, "man, you make it look so easy, I already ruined one set of graphics trying to do it myself."
I've done a bunch of large decal work at work on work trucks and usually leave the transfer tape on anywhere from an hour to over night before peeling it off.
Then I watched my painter friend apply some stripe decals and he sprayed the transfer tape with Rapid Tac application fluid to release it right away.
It seemed to work real well and I was going to use it on the stripes you sent me? Sound OK?
