Going to the states in September on vacation, asking for help :)

Hi everybody!

I'm going on a 2 week trip to the states in september, and because so many 'MERICAns are on here I figured I'd give it a shot to ask some tips here

Oh yeah I'd love to see some sport games too, and try out tailgating ! College games sound cool but where can i buy tickets and find games?

We're 5 friends from 25 to 35, all male, all like drinking Wink

First we'll be going to Vegas for a weekend, any cool rock cafe's over there, I'm looking for places where mostly locals go?
What casino's would be best?
we'll be staying at treasure Island...

After that we take the plane to Atlanta on monday september 19th , hoping to camp for a night in the smoky mountains. Any tips on this would be great!
We'll be there for just one night so maybe a cool trail loop with overnight?

Then we're going to Nashville for 2 nights, so one day to see stuff. Stax studio's maybe? Any other tips would be great!

2 nights to memphis after that, friends wanna go to graceland but I've been there as a kid so i'm looking for some cool stuff to do by myself?

On saturday we'll be driving to hot springs, hoping we can rent a boat for half a day on lake Ouachita and in the evening driving to Sulphur Springs (just because the name sounds cool) for one night

Sunday we're going to Six Flags Over Texas (got a flashpass)

In the evening we drive to Austin were we'll be staying all week untill saturday when we're going back home. Here we are going to the fantastic fest film festival.
Any cool things in Austin to do or daytrips with some cool activities?

thanks!