Orihuela padron rules
It appears that Orihuela town hall have changed the padron laws and that anyone who applies for padron must have a residencia certificate, Orihuela are the first municipality in the region to bring this into force, Torrevieja have not yet recieved any instructions but may well in the near future.
Amongst other things this will cause problems for persons without residency wishing to register a vehicle in Spain as you need a padron certificate to register the vehicle in your name and pay SUMA on it.
Many second home owners in Spain keep a car here for using while they are visiting.