Here's what I've already discussed with Anniesantiago in a PM:
My wife and I walked the coast from Porto during the period may-June 2005. We were enticed into this particular version of the Camino Portuguese by the Tourist Office in Vila Do Conde, stressing the view on the ocean, the beaches, the fishing villages, etc.
Indeed, we experienced all of the things promised but in a very uncomfortable 40C weather, at the time when the whole of Portugal was on fire (remember the very extensive forest fires Europe experienced during that summer). It was so hot, someday we couldn't walk for more that two or three hours. Needless to say we didn't see much rain, except for one day in Galicia (We would have been surprised otherwise).
There was a total absence of pilgrims' facilities, although we could always find a cosy little pensao, a nice affordable hostal or count on the ever present Portuguese hospitality.
But what made this adventure most difficult was the fact that all of the way is on pavement, on sometimes busy highways, with very inconsiderate drivers.
In essence, this time on the Camino was not easy but as always, an experience to cherish and remember, after showing a tad of open mind.
I wouldn't recommend it to a first timer...
Jean-Marc