There were prohibitions introduced at various councils, such forbidding the use of beds or couches in Church buildings.  They were often defamed by non-christians as immoral affairs. 

By Augustine's time they had become something of a Charity meal, and they had largely ceased by the end of the Patristic era. 

Early Texts include

• St Ignatius of Antioch to the Smyrnaens (No baptisms or love feasts with out a bishop's supervision)
• Tertullian
• Plinys letter to Trajan (...the sum and substance of their fault or error had been that they were accustomed to meet on a fixed day before dawn and sing responsively a hymn to Christ as to a god, and to bind themselves by oath, not to some crime, but not to commit fraud, theft, or adultery, not falsify their trust, nor to refuse to return a trust when called upon to do so. When this was over, it was their custom to depart and to assemble again to partake of food--but ordinary and innocent food) Full Text at Ancient History