the breakfast service was great...quick and attentive. The evening service was TERRIBLE....one couple walked out while we were there because they got forgotten. We sat 15 minutes before even asked if we wanted drinks and waited and additional 20 minutes for two bowls of chicken soup....awful service.
yes , we were at Denny's on sunday for my birthday, didn't know if they still did the birthday thing, and yes they do the breakfast free. We were pretty late (noon) the restaurant was packed for brunch. we didnt have to wait to long for anything, they had plenty of staff.