Sailors flush with rum and the heat of the sun, these Drunkards can be useful in a few ways. First as blend groups that allow Edward to hide in plain sight, and secondly as allies in the event of a scuffle. But remember to bring a bit of coin if you want them to fight alongside you, as these pirates won't risk their lives for free.
(Why are these guys always standing around in tight hurdles? Can't we find a few who are swinging from chandeliers or sleeping under donkeys? –OG)