Activities of those ignorant or opposed:
(i) endless strings of drinking parties and festivals
(ii) taking advantage of slaves and women
(iii) extravagant tables of fish and other things
there is also a fourth that is very important:
(iiii) spreading around false opinions i.e. spreading myths and absolute imaginative ideas (that is the source of most of the turmoil that seizes upon the souls of men).
The forth is a real polemic against Plato. Plato is to blame for all the ignorants that are moving/acting among two things either they are ascetics or they are profligates. Between "either this or that" there is the third (tertum datur) which is US THE EPICUREANS.