I saw something I hadn’t noticed before in Jesus’ instructions to the 70 he sent out in Luke 10:

Don’t feel the need to shift from one house to another, but stay put in one home during your time in that city. Eat and drink whatever they serve you. Receive their hospitality, for you are my harvester, and you deserve to be cared for. When you enter into a new town, and you have been welcomed by its people, follow these rules: Eat what is served you. (Luke 10.7, 8, Passion Translation, emphasis mine)

Twice Jesus told them to eat what they were served. The Passion Translation has a note on that:

This instruction to “eat what is served” was given twice, for the Jewish dietary laws were not meant to be a hindrance in their ministry, nor were the disciples to demand certain foods.

The 70 were traveling teachers, men with some inherent respect in their own culture, but they were not to use that authority to demand either their preferences or to correct some violation of Kosher law as the Passion Translation note suggests.

I think as messengers of the gospel in this culture, we could go a long way by not always demanding our rights. We could stand to be more winsome and less in-your-face. 

Live an exemplary life among the natives so that your actions will refute their prejudices. Then they’ll be won over to God’s side and be there to join in the celebration when he arrives. Make the Master proud of you by being good citizens. Respect the authorities, whatever their level; they are God’s emissaries for keeping order. It is God’s will that by doing good, you might cure the ignorance of the fools who think you’re a danger to society. Exercise your freedom by serving God, not by breaking the rules. Treat everyone you meet with dignity. Love your spiritual family. Revere God. Respect the government. (1 Peter 2.12 – 17, MSG)