Ours (www.sermonaudio.com/providencepca) is one of the churches mentioned in the article and banned from the festival. I strongly suspect that the "free food offending the vendors" thing is a smokescreen created by the festival director because of the strong negative reaction this is generating. When we and other Christian groups initially contacted the festival about renting a booth, we were all told by Zack May that a decision had been made to ban religious and political groups from the festival because people were "offended" by people pushing their beliefs. Specifically I was told it was people witnessing for the gospel.

The fact that the "not fair to vendors" thing is a smokescreen is revealed by the fact that they STILL allow other non-profits to operate booths and give things away.

From my first phone call to the organizers, it became clear the gospel is the offense they want to go away.

What is stunning however was the vitriol expressed by other Koreans towards these kidnapped missionaries. Articles in Korean English Language dailies detailed how fellow Koreans actually sent emails to the Taliban exposing how the missionaries were there to evangelize and not merely to heal and encouraging the Taliban to kill them. How anyone could take sides with the Taliban, especially when these bloodthirsty Jihadis would be just as likely to kidnap and kill as infidel "apes and pigs" the same Koreans who were encouraging them would be impossible to understand were it not for Christ's warning:

"If the world hates you, you know that it hated Me before it hated you. If you were of the world, the world would love its own. Yet because you are not of the world, but I chose you out of the world, therefore the world hates you. Remember the word that I said to you, 'A servant is not greater than his master.' If they persecuted Me, they will also persecute you." (John 15:18-20a)

This spreading the gospel to the nations is what Christ's true disciples did and have been doing. The non-Christian Afghans do not know the Father for they deny His Son and do not come to the father through Jesus:

"Whoever denies the Son does not have the Father either; he who acknowledges the Son has the Father also." (1 John 2:23)

Additionally, they feel they can be saved by their works (including dying in the Jihad), but the word tells us no man can work his way into heaven:
"Jesus said to him, "I am the way, the truth, and the life. No one comes to the Father except through Me." (John 14:6)

My first instinct was simply to delete your comment as neither Christian nor profitable, but I'll leave it up and instead respond and let others do so.

Jesus clearly never "prohibited proselytizing" quite the opposite in fact. During his earthly ministry he sent out his followers to preach the gospel (for instance the seventy of Luke 10), he himself went about preaching the gospel and urging all to repent and believe, he went into Samaria and urged the Samaritans to believe in him telling them their worship was wrong, he gained converts there and they in turn converted others. Christ crossed the Sea of Galilee to bring the gospel to the Greeks of Gadara. When his ministry was over he COMMISSIONED his church to spread the gospel to every nation:

While I agree that the civil magistrate has a duty to defend his people from the evil that the Jihadis desire to do, the church has a duty to take the gospel even to those who would make us Martyrs, remembering that we were all once just as blind ourselves

You will recall that after Jim Eliott and his 4 fellow missionaries were murdered by the Alca Indians, the response of the church was not "kill 50 Alcas for the five missionaries they killed" rather Jim's own wife and Nate Saint's sister went to the Alcas and ended up converting the whole village. The same sort of thing was done by the same Christians who were being killed by the very Romans whose eternal good they were seeking.

But regardless of whether or not the church is granted success in her endeavors by the Lord, our duty to forgive them and carry the gospel to them is just the same.

Prov. 13:24 He who spares his rod hates his son, But he who loves him disciplines him promptly.

Heb. 12:6 For whom the LORD loves He chastens, And scourges every son whom He receives."
7 If you endure chastening, God deals with you as with sons; for what son is there whom a father does not chasten?
8 But if you are without chastening, of which all have become partakers, then you are illegitimate and not sons.
9 Furthermore, we have had human fathers who corrected us, and we paid them respect. Shall we not much more readily be in subjection to the Father of spirits and live?
10 For they indeed for a few days chastened us as seemed best to them, but He for our profit, that we may be partakers of His holiness.
11 Now no chastening seems to be joyful for the present, but painful; nevertheless, afterward it yields the peaceable fruit of righteousness to those who have been trained by it.

Sad, but increasingly common as marriage slowly becomes non-existent in the West and we revert to a society made up of single mothers and essentially feral irresponsible males.

The central issue is over whether one believes that Christ gave the church the authority to ordain new days and modes of worship, and then command that the saints observe them. Obviously the Roman Catholic church believes that he did. But up until the late 19th/early 20th century the vast majority of denominations with Reformed roots did not (Presbyterians, Congregationalists, Baptists, etc.)

Many today still believe that while we may have whatever secular celebrations and feasts we wish (Birthdays, Independence Days, etc.) we do not have the authority to introduce our own inventions into worship. So while I may send my dad a present on Father's day, I'm not going to observe a "Father's Day" service in the worship of the church.

I don't expect anyone who is convinced the church has the right to create and observe Holy Days to follow this principle, but the following sermon at least explains why many Reformed Christians do not observe Holy Days themselves: