You are correct biarritzdon Last year, mid September, we arrived at the cathedral around 18.00. There was a table and chairs and a sign, this was presumably where pilgrims could pick up credencials. However the people staffing that point had gone home. Luckily I spotted a man moving furniture around so I called out to him "monsieur, monsieur" and asked where we could get our credencials. He took us to the sacristry (vestry) and issued them there. He also showed us the statue of St. Jacques in the vestry.