Ultimately, this is a part of the greater clash on 30A. 30A itself is becoming a resort, and as such construction workers etc. and folks in a hurry are either going to need to adjust to this fact, even though legally it's not a planned unit development. It's actually more dense for much of the year than many PUD's. Some like this, some wish we could restrict the density and behaviour that comes with it, into defined legal zones, but in my humble opinion that's just not life.
I don't know what all the solutions are. I do know for those that really hate this inconvenience of much of the area becoming a very dense vacation resort, the solution seems pretty simple to me; move to somewhere you don't have this problem, otherwise you do like most locals do and adjust your schedule around it, and be somewhat glad for so many of the locals who actually benefit greatly from the fact that south walton/30a is hopping mad, for much of the year.
It's a resort 10 or 12 weeks out of the year. Most folks would be shocked at how many mobile homes are within a ten minute LSV ride from their condo.