@cane.mba Yes, I try to hit all of them. The atmosphere depends a bit on where you park your boat. The slips are usually full of boats, loud music, and people do party. It's friendly and very very social. There are kids around, people of all ages in fact. The beach is crowded, long waits to get into the restaurants, usually bands playing up on shore, people hanging out, etc. The high energy social is fun sometimes. Other times, I anchor the boat out in the cove somewhere, listen to my own music, swim, relax, etc. A little calmer experience. If you want a slip during peak season, its best to reserve one as they will fill up. Otherwise they are first come, first served and free to use.
The fireworks are really good. They wait as long as possible to shoot em off, until the onshore business is dying off for the night. After the fireworks are over, there's a mad dash out of the cove. I usually try to be on the front end of that, or wait until most of it has cleared out before I go. I figure it's a high concentration of drunk boaters all heading for open waters in the dark. Crossing the lake in the dark is actually something I really enjoy, but I try to do so when and where traffic is at a minimum.
There are a couple of groups of people with mostly cruisers who weekend at the SSC docks; Lake Lanier Boaters Group (LLBG) and Lake Laker Cocktail Club (LLCC). Both groups are on facebook. The first is family friendly, the second is not family friendly.
It's a fun time, you should try it. If you know you are going, let me know, be glad to raft up with you if you don't want to get a slip.