I have returned home after a holiday in Portugal, and I managed to harvest some 12000 gpx points, though it seemed like most of it already was on the map. For certain I know yhere are 3 petrol stations and a restaurant to add, and maybe a hundred meter road. I might also be able to point out a post office and a grocery store (they called it a mini-market, a supermarket with two shelves....)

It looks like Portugal have done some imports in additional to maybe Bing data.

I will look at the data when I get time, for now, the GPX tracks are uploaded publicly...