@farmerman,
My parents are buried in the VA Cemetery in west Los Angeles. Back in the late sixties, just before my father died, I worked across the street and heard taps through my lab windows, a lot, usually around ten a.m. Later on, I still worked in that building, but in another lab in a different area, and didn't hear them. (My mother died later.) Anyway, I never did go there on Memorial Day (also my husband's birthday, back then), always going when I felt like it as I passed the cemetery, any old day of the week. Now it is hard for me to get there.. any time.
Which is to say, people are not necessarily forgotten, just because the visit isn't on a prescribed holiday, even a memorial holiday.