I have never been disappointed at any of the Firefly locations...and this was my first visiting the Henderson location.
Outside of some major parking issues...give up and just use valet. It prevents you from waking from a dirt parking lot next door.
The place is upstairs and very popular with locals....great views, fab tapas menu, bottomless pitchers of Mojitos and a wait staff that is quick, courteous and truly wants you to enjoy yourself while there.
Get their early for a good seat, otherwise the wait time can be pretty long...and there's no fun waiting while you hear people laughing, while the smell of food and alcohol is in the air.