The whole concept behind "blue laws" seems flawed obviously. If someone wants to get loaded on a Sunday (or before noon on sundays in Fl) or after midnight during the week or after 2am (depending on state) then they will get loaded.
In the end, the movement would annoy the hell out of me- not because I am a raging atheist but mainly because I can't STAND people trying to tell me how I should or should not live.