Right now I think it may mean either that you can get texted when your room is ready, and/or get texted and bypass the front desk entirely (get texted with room #, and magicbands will magically work when room is ready).
If you haven't done so already, you need to link the room reservation to your MDE account. Once linked and you are 60 days or less from check-in, there will be a link to the on-line check-in process on the 'My Reservations & Tickets' page.