I went to HALO last Thursday for the Latin night. Its the best one I've been to in Charlotte. Free for ladies (only $5 for guys), and the drinks were strong and cheap ($ 5 for a Black Label and Coke). Lots of (free!)seating and the dance floor is very large (compared to other clubs, Charlotte). HALO might just be my new favorite spot!!
Also they have free parking, which is always a plus!