If a man cannot be at least polite and charming (and not boring) on a first date, or even a first meeting, they are certainly not worth your time. However, in defense of my sex (heh), men are often equally nervous about meeting new potential partners.
About the cucumber thing, note to men trying to meet women at a grocery store: avoid the melon section
Once upon a time, when dinosaurs ruled the earth and I was single, I used to like to invite a girl to my place for dinner, as I cooked very well. Years later, I discovered this could be rather intimidating....more fool me, I suppose
About those octogenerians....maybe find out if they have some coin, accidents do happen, and you can always hire a cabana boy