Like I said.... hard to kill.
Isn't this a forum with actual experienced pilgrims? We just quote simplified guidelines here?
On my first camino CF i didn't know anything about the 2-stamp-rule until I got to Santiago.
A bit nervous I went to the pilgrims office to get my Compostella and just pretended everything was fine, hoping they wouldn't notice my "just-one-stamp".
Everything was fine, no problem.
I asked the guy behind the counter what the deal is about the two-stamp-rule I had been hearing about so much and he explained to me that before they can give out a Compostella they just have to be pretty sure that you actually have walked at least the last 100km. He told me that if you have plenty of stamps in your passport that make sense, if you have like stamps from places were there are no buses, if you look scruffy and he sees you can hardly stand on your legs... It was not a black and white thing, he has to be convinced you did the walking before he gives out a Compostella. If you have two stamps a day for the last 100km he MUST give you a Compostella even if it annoyed him if he was convinced that it was just some guy coming to get a paper. That 'must reason' is, most probably, why it apparently is printed in some passports, and why it's on the website.
My second CF, my third CF.... no problem, and not just me but my whole pilgrim-family each time. Call it actual experience, call it being well informed, or call me a liar.
so... if someone does the whole CF, or a large part of it, (has plenty of stamps etc) I can't put it differently then "you don't need two stamps a day".
No need to wait for a bar to open just to get your second stamp or whatever.