if its your first time about 1 hour 30 mins max but make sure you choose your design when you get there otherwise they have to stop whilst you trawl thru all the designs etc, me ? I always have natural background, half tiger design air blown in white and silver between the white lines, the choice is yours its your money, tip the girl/man if you are going back again if you r not dont bother.
sorry Lisa missed your bit, yes you should be out in just about an hour be careful not to smudge them make sure they are dry.Good luck.
As your going "Essex" what about the fake tan ? Brentwood Essex is now known as "Orange County" !