I base my reaction, not so much on what Jesus would do, but what He DID do. When He instituted communion, He did not invite all of His followers to be there, just the 12 - His 'church' as it were. That is why, I don't take communion at another church - even another Southern Baptist one. But, when my Bible study held communion, I participated because it was MY group. Now having said that, had someone come to the door seeking food, Jesus would not have turned them away, no matter how tacky it was for the stranger to have stayed...