Entry "requirements"

[Juan]

Pat Devine has raised possible border checks as you enter Spain. These are extra to a Covid vaccination document.
From the gov.uk website:
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At Spanish border control, you may need to:

* show a return or onward ticket
* show you have enough money for your stay
* show proof of accommodation for your stay, for example, a hotel booking confirmation, proof of address if visiting your own property (e.g. second home), or an invitation from your host or proof of their address if staying with a third party, friends or family. The Spanish government has clarified that the “carta de invitation” is one of the options available to prove that you have accommodation if staying with friends or family. More information is available from the Spanish Ministry of Interior.
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The campsite/Pablos address is
Casa Germán
Barrio la Secada
Matienzo
Cantabria
39812
Spain
+34 942 61 98 18

However, nobody connected with the Matienzo Caving Project has been asked for any of these extra documents when recently entering Spain.