Berryhill – $3 Margaritas, All Day Saturdays April 30, 2012 by Jill Jarvis Leave a Comment I found another great margarita deal. If you don’t hit Mission Burritos from 3:00-7:00, try Berryhill Baja Grill. At the Buffalo Speedway location, you can get $3.00 frozen margaritas all day every Saturday. AND, kids eat free every Saturday! My kids and I love Berryhill. Check out our review HERE.