Hilton HHonors members can earn up to quadruple points on Hilton stays through Dec. 30, 2010. Registration in the “Spend a Sunday, Gain a Faster Getaway” promotion is required at http://www.HHonors.com/Sunday prior to your stay and registered members will earn double base points (20 points per dollar spent) on all stays or quadruple base points (40 points per dollar spent) for the entire stay if the stay includes a Sunday night. Participating hotel groups include Waldorf Astoria Hotels & Resorts, Conrad Hotels & Resorts, Hilton Hotels & Resorts, Doubletree, Embassy Suites Hotels, Hilton Garden Inn, Hampton Hotels, Homewood Suites by Hilton and Home2 Suites by Hilton.