Doubletree Times Square
On a 2-night points stay as a Diamond, got two breakfast buffet vouchers for each night (one for me and the wife) but none for my teenagers.
Great buffet, with full hot and cold choices, omelets, pancakes, French toast, etc. Plus choices geared for non-Americans, such as lunch meats, tomatoes and lettuce, and rice.
The front desk suggested we could eat elsewhere one morning, and save the 4 vouchers to use all at once - which we did.
Nice benefit, as after taxes and a tip, the buffet is close to $40/person!