You can cancel your reservation directly with the hotel up to 48 hours prior to arrival without penalty charges to your credit card. (daytonabeachresort.com)
Reservations may be cancelled up to 24 hours (Before 3:00 PM GMT) prior to date of arrival without penalty. (luxuryhotelsgroup.com)
Previously, most hotels within the two chains permitted cancellations as late as 6:00 p.m. on the day of arrival without any penalty. (frequentbusinesstraveler.com)