To be clear and avoid ambiguity..

I will be two or three days late. yes, I don't know that at the outset - so I have decisions to be made as I get later and later.

I do build "fudge factor" into that, so assume I also know my wife will probably be calling for help after 48 hours - She will know my start point, exit point, planned route, and expected out time, So I'm +48 hours past the fudge factor.