The Bible says NOTHING about civil marriage, only religious ones. Traditionally, the church has not recognized civil weddings. So Kim Davis can easily issue licenses without violating any religious restrictions, because there are no religious restrictions to non-religious marriages. And, of course, a marriage license is not a wedding:it is at best a document of official intent to marry. The stewardess may be violating the Koran by serving alcohol to a passenger, but this is a silly restriction: she is not selling it not offering it as one might offer it to a guest; she is simply complying with the request of an almost certainly non Muslim. Serving one drink of watered down booze is hardly going to make anyone noticeably drunk. Airlines refuse to serve more drinks to people who appear to be drunk, anyway.
Islam is a rather silly religion: backward and dogmatic. Mohammad was illiterate, so he did not write the Koran. The legend is that Allah dictated it, then he memorized it and later someone, we do not know who not when, wrote it down. So the written Koran is somewhat questionable. Even though it is written in verse, people need to hear something many times before committing it to memory. Can you picture Allah repeating the verses again and again until Mohammad can repeat them word for word? I find that to be hard to imagine. Moses had just the Ten Commandments, but they were presumably written for him by God. I find it somewhat refreshing to imagine God as being literate. There are no signs, by the way that Jesus was literate. One would expect this from a rabbi, but Jesus was not a traditional rabbi, who would typically be of the Levi caste and the son of a priest, rather than the son of a carpenter,
A marriage license is a more serious item than a martini, but nonetheless the stewardess has the better case. But both cases are silly. People should resign from jobs that require them to violate their religions, phobias, obsessions or other mental or physical restrictions.