The New Testament's answer to this question is clear:
Note it well: Those early Christians did not regard the Lord's Supper as an occasional activity. Neither were they content to add it on to the "preaching" service as a sort of perfunctory addendum. No, their meetings were Christocentric. A table, not an altar or a pulpit, was at the center. And the Lord honored that.
I'll let Howard Marshall have the last word: