Is it open today or is it actually closed

No

They won't you to use there web site

Yes, you can. It's on the Web page

Six Flags provides a designated smoking area for those who may wish to smoke on grounds of the theme park Six Flags over Georgia

Yes, they even serve a coke and Jack Daniel's icee

I think so. We have the diamond membership with the meal plan and routinely eat lunch and dinner and a snack. If our family of 5 were to buy all those meals it would be a couple hundred bucks each time we go, but I always get to say yes to food because it's "free"!

Yep

It includes Hurricane Harbor which is inside Six Flags park. It does not include White Water which is a separate park all together.

Yes and no. On the website and through advertising they say yes. But, the crowds are very low. My son works there. When I dropped him off a couple of times, me and my younger son decided at the last minute we wanted to go. We walk up and they said reservations were not needed.