I remember, as a kid attending Catholic school, taking our peanutbutter and jelly or fried egg sandwitch to school to eat 'after Mass'.
Partially. I cheat a little bit by having tea (or coffee if I'm having trouble waking up). In the stricter version of the old rules, even water broke the communion fast. But in the Pius XII version from the 1950s you could take plain liquids, and the midnight fast was changed to 3 hours (which made afternoon and evening Mass schedules possible). We have an 11:30 Mass which means that I don't eat anything until after 12:30. But my body seems to know that it's Sunday and doesn't give me any trouble. My biggest problem is the temptation to pig out on the doughnuts after Mass.
Our whole family never eats meat on Friday. However, we don't take it with the seriousness of a mortal sin, although perhaps we should.
I particularly am a fan of the strict communion rules because it gives a ready-made excuse to anyone not attending communion. In the new rite, with the fasting rules that allow you to be eating on the steps on your way into church (if it's going to be a long Mass), you're practically making a public confession of mortal sin by not going up to communion. This problem is exacerbated when some parishes have ushers that come to each row and look at each person as if to ask "So why aren't you going up?" Often, among the hundreds of people at a NO Mass, you won't find 1 not processing up for communion. Remarkable, considering the data about the ubiquitous nature of mortal sin and the neglect of confession. The strict fasting rules, and the more chaotic move to the communion rail whenever the spirit moved you, made it possible for people to avoid sacrilege without everyone noticing.