Hi NorthernLight. By the time we got to Roncesvalles, we had to stay in the overflow accommodations, but they weren't tents and were like railway boxcars! There were four sets of bunkbeds in the room which had one door and one window, and we also had to use temporary bathrooms which offered cold showers, so not exactly ideal for our first night spent on the Camino, (after looking forward to staying in the main building, after hearing how wonderful it is!) but still, we were thankful to have a roof over our heads and a great meal. There were also tents set up, but in this case they were brought by the pilgrims themselves who brought their dogs along and the peregrina who was walking with her donkey because animals aren't allowed in the albergues. We had hoped to sleep under the stars one night, but alas, it didn't happen.
Buen Camino!