I see you are 19. Don't you have to be at least 21 to get into a lot of clubs here? And what's wrong with oldies? Some of my good party friends are in their late thirties and look really good (at least 10 years younger) and are a lot of fun
I have hardly seen the door guys in clubs here to check the ID of the patrons entering their club, unless the patron looks really really young. So, it should be alright.
You'll definitely be ID'd at Mes Amis.