Although I did not walk to the cable car station it is very near to the hotel I stayed i.e Namsam park Hotel and all within walking distance from either Myeondong and Hoeyeon (Namdaemun) MRT stations.

T-Money is transportation card. When you use subway, bus, taxi etc, you can pay for it by T-Money Card.

About roaming, see this sites :
SK Telecom Roaming Service
KT Telecom Roaming Service

This sites provide information about various roaming methods and call/sms/data plans etc, and you can ask what you wonder to its customer centers directly. I think you can arrange it before you make a trip.

Reporting from Seoul;

Airasia got delayed for 1/2 hr yesterday, by the time I reached Incheon; collect baggage etc the last bus has left.

So for those catching the bus; just do a time check.

Phone rental info:-

check out S Roaming. I rented a phone not because I need to make calls; it's because I need "unlimited INTERNET access". It's the only carrier I know that provides unlimited 3G data. Total cost for my 6days rental is 49,280won. Not bad I would say. U can download any free apps from the market. So whatsapp; Facebook, maps, iTourSeoul is available.

Raining cats & dogs here; forget sun block. Umbrella is a MUST!!. It has not stopped raining since I arrived last night. Ruined all outdoor plans to visit the palaces n buckhon. Ended up in the National Museum and the Malls @Yongsan

Guys,
I will travel to Seoul next month (13/8 - 18/8). My 1st time going there. Anyone can recommend where to visit during this time? If possible like Day 1 where till last day. Really appreciate it.

Thanks.