Qasar Salaah and Full Salaah

Permanently residing in one country and travelling to one's home country

Q: I permanently work and reside in Sydney, Australia with family while not owning any property here. My parents live in Lahore, Pakistan in a house under their ownership whereas I own a residential plot in Islamabad, Pakistan. 

I'd like to know if I am travelling and staying at any of the above three locations under 14 days, where should I offer full prayers and where would qasr prayer be required?

Will a person be a musaafir or muqeem when staying in Makkah and Aziziyyah?

Q: Insha Allah I have intention for Hajj. So we leave on the 28th of April from JHB. 

We'll be 10 days in Makkah

Then 12 days in Azzizia

Then 6 days of Hajj 

Then another 6 days in Azzizia. 

So what I want know is where am I musaafir in this whole trip and where am I muqeem? Do I regard Makkah and Azzizia as 1 or what?

Musaafir staying in different suburbs for few days each

Q: If I travel from Johannesburg to Durban for 20 days, but stay at different suburbs in Durban for a few days each, e.g. Musgrave, Sherwood, Overport, Clare Estate, Westville, etc.

1. Would I be a musafir?

2. What is considered in determining whether a place is considered as one or two different places? E.g. Is it based on the city name, suburb, physical break in buildings, etc?