Re; Balcony access for Mardi Gras,
Most bars and restaurants require special purchases to access the balconies. Mostly it's a flat-fee that may include drinks and a buffet, or something like that.
Some of the more popular balconies are at Bourbon St. Blues Co., Razzoo, Mike Anderson's Restaurant, Cat's Meow, Temptations Gentleman's Club and The Embers Steakhouse.
The prices can range from $10 to $100s of dollars. So, do your research and I'm sure that you'll find one that's just right for you.

Oh.....BRING LOTS OF BEADS UP THERE WITH YOU.....or you'll find yourself watching everyone else having all the fun.

-Gene