I am traveling to Mexico with my teenage son (5'8, 275lbs). He will be having major weight loss surgery. He technically will be able to walk short distances, but shouldn't be walking or standing for long periods. Should I book him 2 seats because of his size by putting XS on the 2nd ticket, or should I book him 2 seats because he's big and is temporarily disabled (put DXS on his ticket?). I already anticipated buying the most expensive tickets both ways because I hate fighting over overhead bin space.
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