I was traveling with a friend who has Priority Pass and rarely uses it when flying, but at my suggestion we ended up trying the Club at SEA (S gates) right when it opened at 6 AM and LAS (D Gates) around 9:30 am, so there were breakfast options at both. LAS had additional food and drink options after scanning a QR code and was getting packed such that there was a line for the restrooms. I was told by a friend that the S gates location at SEA was the better of the two (the other is at the end of the A gates) and it was only a short train ride from the B gates WN uses. LAS was a bit more of a walk and train ride, but it was fairly easy to get to the WN gates from the Club. The food was similar to that of a continental breakfast at a 2-3 star hotel.

Overall, it was nice to be able to get a quick snack and drink, but I usually pack some food and thus don't need to buy food at the airport. It would've been useful on my status runs last year though, especially since LAS and OAK do not have very affordable food options and the main affordable food option at SEA is the Wendy's over in the N gates as the McDonald's stopped accepting app coupons.