I think the range of opinions expressed here reflects the range of travel patterns held by members. I have long printed out confirmation pages for flights, hotels, rentals, etc - when leaving from home. However, I sometimes - often times - leave home with a one-way flight, my first of many hotels/rentals booked, and I venture out into the world for upwards of a couple of months. Sometimes I hit continents along the way I'd never planned for when I left home. In such a scenario, it's a lot more troublesome to take extra time to head for the business center (and not all of the third-world hotels I stay in even have any such luxury) to print stuff out each time (not to mention the online security concerns that go along with doing so), when instead I'm busy packing and planning and trying to get some sleep (on and on). Not everybody here is a week-at-a-whack salesperson or doctor or idle rich gallivanting about the planet one single round trip at a time.

I also think this knee-jerk reaction to ALWAYS blame the member ignores the fact that very likely no amount of hard prints, e-mails, and/or screen shots would have led to the front desk being able to honor the reservation. Haven't plenty of folks reported that showing their status in the app draws yawns and rolled eyes from FD folk? Why is there such a presupposition that the hotel itself would've been able to subdue Marriott IT simply because they laid eyes on a piece of paper or a screen presented by walk-in off the street? Especially in the case of an award stay, where the hotel can't just enter in a rate override manually and charge a credit card accordingly?