Check-out is often noon, although you may find some hotels that go by an 11AM or even 10AM check-out time.You can find the details on the hotelu2019s page. Scroll down to key-amenities and click on all-details.At check-in you can ask for a late check-out. Sometimes you will get this for free, in some cases the hotel may ask for an extra fee. If the hotel is fully booked they wonu2019t be able to offer a late check-out.Late checkout is a benefit of Elite membership in the Marriott program. See here : Member Benefits & Reward Tiers