Hi Sandy, Don`t know what warnings you have heard but I haven`t seen any Douanne or police at the Spanish border at Irun in the last 6 months. More Basque cops pulling lorries on the Spanish side.
Just don`t be taking many cigarettes through France, no more than 2 sleeves or the Douanne will confiscate more than that and fine you. I never see many cars getting pulled more vans and lorries, I got pulled off the road between Nantes and Rennes a few months ago. Opened the back of the lorry, drug dog was put in for a sniff around and then I was allowed to go, 10 mins maximum.
Can`t give any advice on dog friendly hotels as I have a nice comfy bunk in the lorry to sleep in.
Only warning I would give is do not stop for anyone other than a marked police or Douanne vehicle, particularly in Spain,there are many unmarked Police cars
now, but if he is genuine and you don`t stop he will radio for a marked car to stop you. I have had two attempts at stopping me by potential robbers waving fake police badges at me. My gut instinct told me they were robbers and I just kept going when they tried to slow down in front of me. I took note of the make and model of the car, registration number and number of occupants and pulled into the first services I saw Trafico car in and reported it.
When fuelling up, make sure you lock your car when going to pay.
Enjoy the drive and have a safe journey.
Jimbo