I think my parents would have been like those described, they would have travelled through Europe from the late 60's early 70's. Although I don't think they went to Ibiza (actually Formentera) until the early 80's, I know family members who came early. I've spoken to them briefly, not surprisingly they didn't know San An where we went but the East/North East.
My parents did not have any cash and lived in a tent, travelled by old fishing boats that 'stunk of oil and desiel' or the 'Magic bus' I think it was called that left London.
It makes me laugh and smile when I hear snipers of them setting wire traps for rabbits, my mum preparing them on a fire near the tent. It's a million miles away from how we travel today. Even if I try....