Hakkasan is one of my absolute favorite places in Vegas. Great vibe, good crowd, nice staff. However, your crowd control rules are ridiculous. For Calvin Harris, if you had to use the restroom you weren't allowed to go back to the lower levels. You can't take away a bathroom when people are drinking and expect everyone to be peachy keen. Build another bathroom downstairs for those tables and the dance floor area to use. Or rerouted one of your ramps downstairs to access one of your preexisting bathrooms.
Otherwise drinks are priced fairly in comparison to other clubs.