February 29, 2012 No Comments Denny’s: 29% OFF Entire Check (Today ONLY!) In honor of Leap Day, Denny’s is offering 29% off your entire check! Must print and present this coupon to get 29% off entire check. Cupon is valid on February 29th, 2012 ONLY! Denny’s: 29% OFF Entire Check (Today ONLY!) – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.