Why does GW or any organization have to make accommodations based on religion. Religion is a choice. It's not something that you have no control over like a disability, race or sex. It's a code that you pick up and chose to follow not something that is forced upon you. It's a value judgement on the individuals part - "I value this religious code and it's tenets over the values of the secular society." That is all well and good but it seems ridiculous to have society at large forced follow your self imposed code of behavior, albeit on a very limited basis. Does it seem reasonable to make a bar have an "alcohol free" hour for those that find drinking alcohol objectionable?
There is another legal issue to consider. That is does Islam prohibit women from swimming with men? From my understanding of Islam, there is no distinction made for the activity of swimming. Women are allowed to interact with men, but are required to dress modestly. From what I am reading, it would be acceptable under Islam for a woman to swim in the presence of men if she wore a full body suit and head covering. Many women on other forums have complained about this being a hassle. I don't think you can make a religious argument of a hassle.
There is the other tenant of fundamentalist Islam that requires a woman in public to be accompanied by a male relative. That doesn't seem to be a problem for these women. So do they adopt Islamic beliefs that they like or offer some type of advantage while dismissing aspects of their own religion that somehow inhibits them?