July 4th, 2007 is a Wednesday. So, which weekend is the "holiday weekend", 6/29 - 7/1 or 7/6 - 7/8?? Online and real-world opinion that I've surveyed is right about 50-50. Kinda makes it hard to plan something when you don't know when exactly the traffic will be bad.
I kind of old and such. I remember when a "holiday" fell on the day it fell on and three day weekends were unheard of. For me July 4th is a celebration of the founding of my country. I also do crazy stuff like attend the Memorial Day service at the cemetary to honor our military. I sympathize with needing time off but does it matter which weekend it is. But to answer your question, the previous Saturday is June 30 so I vote for the wekend after.
The best part of AVP was some guy who laughed derisively every time something stupid happened. And no, it wasn't me. I'm not sure if they sped up Alien gestation by 50x or simply ignored the passing of time.