Received this today via e-mail.
DEAR XXX,
We're on a mission to shape the future of travel and we need your help. You're invited to be among the first to test our new app, Guest Services. Check in with our app and earn 1,000 Marriott Reward points when you complete our survey.
With it you'll be able to: +Mobile check in and out from anywhere +Express check in and out from anywhere using your smartphone +Receive automatic notifications when your room is ready +Share your feedback
So be a part of the future of travel: download it, try it, and above all, help us improve it. Find the app on iTunes. It's free to download and easy to use.
We're looking forward to creating a better travel experience together.
I downloaded it. It asks for your last name and conf#. I put the information in for a reservation Monday and it says it can't find my reservation.
Seems like a useless app.