One more thing to remember, try not to wear jeans or tennis shoes or t-shirts. Sometimes..every once in awhile the only seats we have left will be in F class, and if the person traveling on the D-3 pass isnt dressed properly by company guidelines for first class, they will be denied transportation. This is especially inconvenient if you are on the last flight or the next flights are all full. Also children under 6, including infants are not allowed in F class on passes.