Hmmm. Not sure where you're heading with your question. My general answer to your question is "often" in the course of a year, although not, in the sense I think you mean it, for 3 days at a whack.

I use EDC items... every day.

I use items in what some might term a "ready pack" in a minor way at least once a week and in a major way at least twice a month. One might consider it a second stage of a 3 stage BoB, although it's a bit more than that in some respects and far more ubiquitous than simply a BoB.

I practice the principles "in the woods" (& on the water) quite regularly and perhaps just as important, I teach them over and over again - hands-on - to a number of folks.

Some folks here are much more hardcore than me.

Tom