That's what I thought too, yes I am taking 1.8 - 2.8, so technically my photo background is going to be blurred and bokeh, so locations doesn't really matter much. But one thing that matters would be, I hope to choose a location where there isn't much crowd and/or abandoned places, but in johor bahru hardly got any places like that to meet my requirements.

Which area you are in?

Usually for higher end places, very susah. But for "abandoned" or older malls, usually can 

Ask their security guard or even management. Should do the job. If you are in Klang Valley, pm me directly. I have a list of place you can go.