Unfortunately there is not much I could tell you at this point: Fairphone 2 is not out yet. Pre-order will start soon but it won’t be shipped before autumn. And Fairphone 1 is sold out and won’t be produced anymore.
That means we could either give you information about Fairphone 1 which you can’t get anymore or we could speculate together with you about Fairphone 2 which you can’t get yet 
Especially for travelling this is true.
This is very likely but depends on the size of your library 
The camera of Fairphone 1 was okay but not more. There are definitely better cameras out there. We don’t know yet what Fairphone 2 will bring.
Definitely yes.
We can’t promise that but Fairphone strives for a five year life-cycle which is much longer than most smartphones live.
When googling for review of Fairphone’s camera, I get the same verdict as above: It’s usable but there are better cameras around.
Source: http://www.digitalversus.com
The primary (rear) camera takes pictures with a maximum resolution of 8
Megapixels, with results ranging from decent to mediocre. In good
lighting, it takes photos that look nice when viewed on a larger screen;
they’re fairly detailed, have only a few minor lens-related flaws (such
as reduced detail around the edges) and have neutral colours and just a
little bit of noise. But once the ambient light starts to dim, the
sensor begins to show its limits: the noise spreads, the detail depletes
and the digital smoothing only makes matters worse.
HD 720p videos turn out quite fluid, but have the same advantages and
disadvantages as the still photos. The 1.3-Megapixel front camera won’t
give you the best selfies in the world (the colours are pretty dull),
but it isn’t a train wreck, either.
Compare our test photos with competing smartphone cameras in the Face-Off
A product of Androidian minimalism, the camera interface is simple and
highly responsive. It opens up and snaps photos quickly. In sum, the
Fairphone has an okay camera function. There isn’t much flourish, but it
gets the job done.
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