As per the research data, it is suggested to make your Sheraton Hotel reservations within 350 days before the planned stay date. Also, it is suggested to book your reservations at least 30 days before the stay date. However, if you are an elite member, then you can book your tickets for up to 100 days before your stay. Besides, you can also look for the best deals and offers before making your reservations and get the best out of them on your bookings. However, it is also suggested to contact the customer services of hotel to get the best updates on bookings.