Hi guys,
I will be making a return trip soon to JNB on EK from MAA, and will in process accumulate a little over 40,000 miles. I am looking at a reward ticket on Korean Air and I have a few questions.

I am planning for SIN-ICN-NRT (Singapore-Seoul/Incheon-Tokyo Narita).
According to skywards, Travel from South East Asia to Japan needs 40,000 miles.

1) Is it a return ticket?

2) Can I make a stop over in Seoul without having to use 2 separate reward tickets, in which case I will be short of miles. In other words, is a stop over included in those 40,000 miles?

3) Can I start from a city in a particular zone and end my trip in a different city, but in the same zone? Say, SIN-ICN-NRT-ICN-KUL (Start at SIN and end at KUL)

4) Can I choose 2 partner airlines on the same reward ticket? Instead of flying back from NRT to SIN (or KUL) on Korean via ICN, can I get a seat on NRT-SIN/KUL on JAL? If possible, how are the required miles calculated?

Answers will be greatly appreciated. Thanks.

Cheers,
VizMAX