love feast

noun3

1. •
   A religious service held by Moravians, Methodists and some other group, in imitation of such gatherings, characterised by partaking in a simple meal.

   • He then invited me to a love-feast at his chapel that evening. — 1789
2. •
   (historical) A symbolic communal meal held by early Christians in commemoration of the eucharist.
3. •
   (US, figurative) Any banquet or gathering to promote goodwill among the participants.