Given a travel related situation, and given a specific question about the situation, summarize the question into a title

Q: I have recently traveled to Lisbon and almost each day while being there I have received the same message thorough a cell-broadcast channel on my mobile phone:

21 Lisboa

I have asked my host, but she did not know what this message meant. I am thinking it might be related some weather warnings, but the worst thing I have endured was a light rain.

Question: What does "21 Lisboa" cell broadcast message mean?

A: What does "21 Lisboa" cell broadcast message mean?
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Q: For a particular hotel I booked Expedia's Check-in policies section states the following:

Check-in time starts at 4 PM

If a late check-in is planned, contact this property directly for their late check-in policy.

My question is... what constitutes a late check-in? My flight is scheduled to arrive at the airport at 8:34pm.

A: What constitutes a late check-in for a hotel and should I inform them about my late arrival?
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Q: I'd like to go visit Istanbul in one of the next weeks; I'm not scared by it (I mean, things can happen anywhere), just concerned about possible consequences of taking photos.

I've heard a few third-hand reports about police -- before the coup -- being a bit harsh on photographers. Is it still the same, or even worse than that? Perhaps it has never been like that and those reports has just being exaggerated? I can evaluate how much risk I am prepared to take if I can get access to current information about the police.

I'd obviously avoid sensitive targets (policemen, military personnel and buildings). But I like to take photos of common places, too, so while I'll probably take photos of famous buildings I could take shots of common houses, telephone boots, generic skyscraper...everything that can make a good shot. But then, I've heard (from a friend of a friend of a friend...) that you can get in trouble with police if they think you are shooting things that they think are not interesting and thus you are not supposed to take photos of.

A:
Can photographs be taken in Istanbul as of August/September 2016?
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