Pretty cool hot spot in the Music Factory. I've been to the Charleston location many many times and main difference is the Charleston bar seems to always have live music going. The Wet Willies in Charlotte is actually the biggest Wet Willies in existence (fact for you!) and will occasionally have live music on the weekends but would love to see more acts throughout the week.
The slushies are of course quite tasty and I highly advise mixing the flavors - to get them straight up is strong and the Call-A-Cab on it's own is like medicine. Mix it with Shock Treatment and Attitude Improvement to create a 'Superwoman' and you got yourself one tasty libation.
When the bar first opened the drinks were pretty cheap. I figured they would increase and of course they did so now a large runs you $10 - remember most of the flavors are made with grain alcohol, which can knock you on your ars (yeah... I said ars...) but still $10 for a drink? Yeah... not my favorite part of this bar. And be advise, place has no wine and 6 domestic bottles you can choose from... but hey, the place is known for the slushies - get a slushy!
And if you're hungry, the food is GOOD! Not like bar food at all but props to Wet Willies for having amazing sauces, such as the tequila glazed wings, and flavorful spices, like the kind that comes in the quesadilla, that really sets the food apart from other bars. And they don't skimp on portions either - you'll get satisfied or full, depending on your order and I highly advise stopping in for lunch or dinner to start your evening.
Great patio as well that faces the Uptown Amphitheater, which means if there is a show you can chill on the patio and hear the band perfectly... you don't see them but you still get to enjoy the tunes!