East Side Mario’s – Save $3 off any Signature Entree Lina Zussino Published on May 29th, 2014 Coupons shares Save $3 off any signature entree at East Side Mario’s when you dine in Sunday through Thursdays valid until June 12th. One coupon per table on all of the East Side Mario’s Signature Entrees. To print coupon click here. (Want to save paper? Available on your smartphone too) To find a location near you click here.