#kvetch: my flight is so late that we are starting to board after the published flight time, but since the airline hasn't actually sent an updated departure time to the app, said app is no longer showing the boarding pass (because we must have taken off).

#kvell: I saved the boarding pass to Google Wallet so I still had the QR code and walked right on board. (I could equivalently have taken a screenshot but now that I know this feature is here, it's easier.)