Doing Alicante airport runs with friends and/or family?

Well according to bloggers John and Mary Middleton, who live in Formentera del Segura, you need to be aware that you might face a fine of upto 3,000 Euros if the police suspect you are running an illegal taxi service - and it's up to you to prove you are not, not up to them to prove that you are.There are two main things (amongst many others) that immediately occur to me:- this is a possibly