. View Website. As of February 1, , Grand Rewards has undergone an exciting new transformation. Grand Buffet: Buffet at Grand Casino Hinckley - See traveler reviews, 5 candid photos, and great deals for Hinckley, MN, at Tripadvisor. We ate at this buffet tonight - July 23, The salad bar was quite good, although somewhat limited in selection. We rebuilt your favorite club with bigger wins, better features. is the buffet open at grand casino hinckley. Grand Casino Hotel, RV Resort & Chalets. Fire Monument Road Hinckley, MN (opens in new window) · () (Phone). The lettuce was crisp, and the toppings. View map of. Mark your calendar: The Seafood Buffet is back! Join us on Thursday, November 30, from 2 pm to 10 pm to enjoy a huge selection of savory.