Perhaps they all went to McDonalds - give it up, Spud.
I doubt that many really care anyway, and unless you have the CCTV to hand it could all be fiction, and you have no way to exclude the risk of fiction.
Sorry, I don't like to mention it, I just do mention it.
Jeremy has been trying to show that the author of Matthew could not have been the disciple Matthew, saying that his language betrays a poor knowledge of the Passover festival.
A closer look at Matthew 26 shows that Jesus connected his death with the Passover. In verse 2 he says: "you know that after two days is the Passover, and the Son of Man is betrayed to be crucified". Matthew adds a few verses later that the Jewish leaders were planning to arrest Jesus and kill him "not during the feast". From these statements we know that the author regarded Jesus' arrest and trial as happening before the Passover began. This is confirmed by the fact that in his narration at 26:17 he does not use the word 'feast' when giving the day on which the last supper took place. He only says "on the first day of the unleavened bread".
So although he states that the disciples prepared for the Passover, he doesn't say anything to indicate that they ate it at the official time.
One other question is, what is the relevance of Jesus saying in his message to the owner of the house, "my time is at hand"? If he was to die the day following the Passover, why would he need to add this? It doesn't add any force to the instruction; it does however reinforce the connection between the Passover and the time of his death.
So it is not unlikely that the author of Matthew was a first century Jew who understood how the festival was celebrated, and thus could have been the disciple Matthew.