railway station - at or in

Všimla jsem si, že se používá někdy railway station s různými předložkami -at or in, je v tom rozdíl? <br/> Např. at a railway station – na nádraží jako venku na nástupišti in a railway station – na nádraží jako v budově. kde si kupuji jízdenky?

You usually go in the railway station to buy a ticket, or maybe from a ticket machine on the platform. But most ticket booths are inside the station.

Go in
Be inside
Be at

Ok, in the Headway exercises is ‘’In the railway station" like a title: https://elt.oup.com/…g_dialogue05?…, so I didn´t know why? <br/> What is most used: at a railway station or at a train station? Thanks very much!

I would use IN in a sentence like this: There is no waiting room in the station.
I think, you will see mostly just AT THE STATION instead od railway or train station. All these expressions are correct, though.

As a title, it works fine. It's a title of a book chapter about railway stations – kind of an abbreviated way of saying “[Things You Can See and Do] In the Railway Station”

According to this, “railway station” and “train station” are more BrE and “railroad station” is more AmE, but I definitely grew up saying “train station”. So there are no hard and fast rules – as usual in English 

A jsou nějaká pravidla pro hotel:např. check in /into / at a hotel???

You check into a hotel.

Or “check in at a hotel” is also correct

That's true.

Check into a hotel. (Except now I'm not sure if it shouldn't be “check in to a hotel”…)

Check in at a hotel.

This article: http://www.helpforenglish.cz/…ord-analyses says “check into a hotel” and “check in at a hotel” 

Yeah…I'm not quite sure that's correct. I have to look into it. Because at a hotel, you “check in” and “check out”.

To “check into” something means to research it…I'll check into it. 

It does also mean “to arrive at a hotel”

Look: http://www.oxfordlearnersdictionaries.com/…lish/check_1#…

Ah right, thanks. It's one of those things that's very easy to overthink.