Have a look at Check out anything on Kings Road but the Brighton Pavilion is the best venue. Also Brighton Pier and Due South might fir your bill.
There are no online stores that carry Chanel, it can only be purchased through Chanel boutiques and Neiman Marcus, etc.
I just got Chanel Chance and i love it. I would highly recommend it, since its smell is sweet but not pungently strong. Do not consider Chanel Allure-i did not like it at all. Just a personal opinion!