Went to Korea with my friends last year.  

Details:

Korea Flight: 17 October 2019 at 10.35pm to 25 October 2019 at 6.40pm (Korea Air)

HOW MUCH IS THE AIR TICKET AND HOTEL?

The total cost was SDG$5,981.11 include hotel (3 rooms) and flight for 5 people.

So each person is SGD$1,196.20. 

(But unfortunately due to unforeseen situations, two of them which is husband and wife are unable to go. So the remaining three of us got one room each)

WHERE DID I GET THE SIM CARD?
Bought the Korea sim card from Qoo10 (ICC) cost about $12.20 after using cart discount.

WHERE IS THE HOTEL LOCATED AT?

We stay at the Savoy Hotel which located at Myeongdong, very near to MRT.  It was very convenient.
Direction: Alight at Myeongdong Station and exit 7 but the escalator is very small. There is a lift but it's another side of the exit. I think it's exit 1 or if you don't mind taking the stairs, exit 6 will be nearer.

Lines store just outside our hotel entrance. 
 Warning:
(But better bring all your valuable stuff with you and lock your luggage before you left.
Because got one time, when we are back from the hotel, my friend's room door was open.
The hotel cleaner forgot to close the door. She or he also left the room key as well. 
We were so shocked and kinda angry but we didn't ask for any compensation, just telling them in an angry tone to be careful next time. They keep saying sorry to us so end up we alright with it.)

I was actually very excited about this trip as the last time I went was 2010. 

First Day of Itinerary 

(Start from 18 October 2019)

 - Breakfast at Tosokchon (Ginseng Chicken Soup)

How to go: Alight at Gyeongbokgung Station and exit 2. Go straight about 170m.

- Rent Hanbok at Hanbok Girls

How to go: Alight at Gyeongbokgung Station and exit 3-1 (5 min walk), located on the 3rd floor of the blue building on the left alley after exit 3-1.

- Gyeongbokgung Place

How to go: Alight at Gyeongbokgung Station and exit 5. Follow the sign.

Side Note: Free for wearing hanbok otherwise it cost 3000 won if you didn't wear hanbok

Not sure whether the timing is accurate, double check when you reach there:
Royal Guard is 10am/2pm (20min)
Guard Duty is 11am/1pm (10min)
Military Training outside Hyepsaengmun gate is 9.30am/1.30pm (15min)

- Kukje Electronics Center

 It's a good place for those who love anime. You can go to level 9 (I think), they sell anime figurine.

How to go: Alight at Nambu Bus Terminal and exit 3. Walk straight and the building is just in front.

- Dinner at Loco Quan 401 Restaurant
 The view from the restaurant

How to go: Myeongdong Statin exit 8. Turn left and walk straight and pass by Shinhan Bank. Then, continue to walk straight until you see MCM building. You will see Champion Building next to it.

Check out my video below for Day 1.

Thanks for reading!
Stay tuned for the 2nd-day post in Korea.