A is for ALCOHOL which is readily available in most restaurants.
A is also for amazing turquoise coloured APERITIFS such as the glow in the dark ABSINTHE. Test this out for yourself with a pocket-sized black light or ultraviolet light . Simply shine the light on products and look for a glow.
Last but by no means least A is for Absolut vodka advertising campaigns which in some countries is quiet in your face and which can definitely leave one feeling very much in the dark.