No, as far as I know Ceremonial Magick, including the GD does not have a ritual. All of the Ceremonial Magick groups do require you to learn how to do it. It is a learned behavior not a ritualistic one. I tried to AP for many years using many different ways. Actually, it was Mulberry who helped me realize that I was actually doing it. I believe my brain had been taught by Ceremonial Magick to only experience AP in one specific way.