If I am not mistaken CO lounges offer complimentary alcohol, non-alocholic drinks and snacks.
Correct.
I was wondering what options are available during Breakfast and in the afternoon?
Breakfast items are toast, bagles, muffins and danish. In the afternoon they usually have chips and other snacks, usually fresh fruits, such as apples and bananas.
Does one go to the bar or is it self-serve?
The bar is not self service, it is staffed.
I know there are showers here and I am familiar with other lounges but not the CO one so if I want to take a shower I just ask the attendant?
YES