Galatyn Park, Westmoreland Station have both bathroom facilities and vending machines. Additionally, Park Lane, Mockingbird and Lovers Lane Stations are conveniently located wirhin a walking distance to bathrooms, restaurants and shops.
Hampton station has a restroom, Mockingbird Station has the shopping center attached to it. Most of the stops are typically a block or two from shopping and dining, but those were the closest ones I could think of to answer your question.
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