Denny's 13302 Harbor Blvd. 7:00 AM - 10:00 PM 7:00 AM - 10:00 PM 7:00 AM - 10:00 PM 7:00 AM - 10:00 PM 7:00 AM - 10:00 PM 7:00 AM - 10:00 PM 7:00 AM - 10:00 PM13302 Harbor Blvd. Garden Grove, CA 92843 US