When my mom was alive, I took her out for Mother's Day the day before. That and Valentine's Day are the worst days to go to a restaurant. The lines are only part of it. Usually they have a "special" menu that is severely limited as opposed to their regular menu. And service usually sucks because the waitstaff have too many tables all at one time. Being on the waitstaff end of this equation cured me forever of any desire to go to a restaurant on days it's apt to be a clusterfuck. Or even a "cluster Pho."