@JS1 - all has probably been said , a private Albergue is a business so why turn you away? May I give you another example.
By the time you get Puente la Reina your little legs will be shot so yes , why not take a day off - here is my experience and I have walked the Navarra stretch over 20 times. Call me a creature of habit but to me Navarra is just out of this world.
The Albergue Padres Reparadores is situated right at the start of the old town. It was my first sheltered night ever on the Camino when I did a 'test camino' for 6 days in 2002 when the currency had just changed from pesetas and 80 year old peasants still worked on the pyrenees farms. - I had thought that the Camino may have only have been for 'Woodstock' youngsters - how wrong was I?
The Albergue is a lot larger now , it is probably still the cheapest on the Camino. It has large car park which miraculously fills up over weekends and holidays. At just past noon there could be two or three woman that have taken the kitchen over. (Wizz! , they must have walked fast?) They were cooking for a party of 15 weekend walkers. But who am I to question this - Hey , if I hang around long enough , chances are I will be offered a plate of food with a obligatory glass of vino thrown in.
Spanish folks are very hospitable and do like to share.
I have never been denied a second night at this albergue. The requirement is to pack up totally and leave your pack in a safe place with them. They can then get on with the cleaning and sanitising of the Albergue while you go go and have a lengthy breakfast , a walk over the famous bridge , an amble around town and maybe some shopping? Return in the afternoon and check in again as per the norm.
May I also say , if you are exhausted and hurting , I do not see a Hosvol hospitalero turning you away for a second night - sure , it is bending the rules. I would also imagine that you would have to get out of the way during the day and - hehe - you may be commandeered in the dinner preparation that night.
Finally , I do like the fact that you are contemplating a 'slow' camino. I do feel that as of yet , you have not found the true spirit of the camino and perhaps this time you will. Some folks will walk the Camino 10 times!!! And never find the camino. Your humility displayed in a short verse tells me it will happen. I am sure that this time will be an awakening but be aware , addiction to the Camino is not a treatable condition - it will be with you for life!?
Please give us some updates while you are walking