- Please note that if you are a girl and you have + guests, they must all be girls. Guys in your group will have to sign up themselves. If you are a guy and you have + guests which are girls, they will be added to the discount list, not the free girls list. Friday December 28th 2018 Insomniac Presents: Green Velvet at Exchange LA 618 S. Spring St, LA CA 90004 Event is 21 & over. Dress code is strictly enforced. No sandals or flip-flops, no shorts or baggy jeans, no plain white t-shirts or tanks and no sleeveless shirts. No hooded sweatshirts or jerseys. No baseballs hats or beanies. Jeans and tennis shoes are OK.