Two things Great Adv. could do with a little effort(and probably a huge profit in return):
1-Have music appropriate to each area,like country/bluegrass music for Frontier Adventures and Spanish music/Latin Jazz around Plaza Del Carnivale.Six Flags could partner with a "royalty free music"company to do this.
2-Have uniforms appropriate to each area.Once again for Frontier Adventures it's easy:everyone dresses in denim outfits,like overalls or button-down shirts.What's even better is that some uniform companies could customize the denim outfits for seasonal events:blue denim for spring/summer,black denim for Halloween,and green or red denim for HITP.