Doesn't it rather lose its point if you manage to do it simply by 'stocking up' in advance? (That's a genuine question: maybe I've missed the point.)
Erm; how else am I to feed myself for a whole week? (I could grow a veggie garden, but that would require more planning *still*).
Is this sort of thing widely publicised (or publicised at all) in Russia, Reiner? I think ultimately I'm probably inclined to see these 'international X [or no X] days' as part of the very globalising, administered-life trends they seek to buck.
There's a big difference between opt-in globalism, and consumerism I think (well, they might have common fadistic qualities, but as they say, "economical ideologies come and go, but fads are forever"). What would you rather in place of this day, t_i_n?