Luckily we don't have this problem. My wife knows good food and has no problem choosing where to eat. She also eats faster than I do and usually more than I do (yes I'm mildly overweight - but no she isn't, she's a gym rat and looks amazing).
I went out to eat with my bro and his HCBW last week. It took an hour just for her to decide where to eat, my brother and I were both hungry and nice enough that we were cool with eating ANYWHERE. But we had to wait for her...
I text my wife while waiting and told her it was just one more reason I love her.