Unless it is blatantly very obvious from a very large credencial that you have walked from very far, and that you have made some effort to follow the rules more or less.
True but let me take this moment to thank a volunteer.
When we started we got stamps at all sorts of places, several a day, but towards the end of our camino our double-sided credentials were in danger of filling up and I wanted to leave open the option to walk to Finnisterre.
I either didn't know or forgot about the two stamps rules. Looking back now, both my
Brierley and Village to Village guides didn't mention it and while the instructions on the credential did mention it but they were in French. So I deliberately switched to one stamp per day for the last fortnight.
We turned up at the Pilgrims Office, clean but obviously pilgrims, happy with our nearly full credentials that started in SJPP 45 days previously. The volunteer looked through our credentials closely (at the time I thought he was admiring them) and issued our compostellas with congratulations. We left the Pilgrims Office none the wiser and it was a long time later before I realised what had happened!
Of course, pilgrims should be aware of the rules and follow them.
None of the above is an encouragement to rely on a flexible volunteer but the camino does provide if you have the right attitude.