B/c you are PS you dont get as many choices as NPS do. You could call branch towards the end of your AIT to see if they will give you Korea, now here are a question:
Have you been deployed to Iraq or Afghanistan since 2001?
If your answer is no, then you are not going to be in Korea any more than 2 years, if you go without command sponsorship then you are there for 1 year and can extend or AIP (Assignment Incentive Pay) for another year, thats it. If you have been deployed then you can be there up to 5 years.
Another thing, just b/c you get command sponsorship (apparently there is a lot more slots now, specially for SGT and SSG ranks) does not mean you will be in the same camp as your dependents, they might be in Yongsan and you could be stationed up in 2ID land and can visit them on your time off...
Yes, there has been talks of closing Yongsan and moving everything to Humphreys, to include 2ID which is Camp Red Cloud(HQs is there), Camp Casey and Camp Stanley (where you inprocess 2ID). I dont know if they are moving units yet, I dont think so since when I left they were just trying to start expanding Humphreys to make room for housing and all the units.
Good luck, BTW why so focused on going to Korea?
Lead by Example!!!