If you are a member of the Las Vegas Advisor there are several decent food coupons you can print out from your computer.
Log in and go to daily deals e-coupons:
Among the offerings are buy one get one free buffets or coffee shop entrees on Wednesdays for all Station Casinos(including Red Rock) for those over age 55; El Cortez BOGO for Roberta's; Ellis Island 50% off menu item (that great steak deal!); and Binions $1 off deli sandwich. There also are several BOGOs for shows.