I watched them live last night and it was amazing! I was in the near the stage, the standing area and have to queue about 8 hours before the gate open at 2 PM. The show started at 4.30 and I got to stand in the end of the catwalk, near the left Y head tip of the catwalk. Only 3-4 people stand in front of me
The concert lasts about 2,45 hours because they're leaving by 11 PM and Jakarta is hell of a traffic everyday so so it ended at 7.45. Boomerang, LOVE&GIRLS and How Great Is Your Love were cut from the setlist

nonetheless the girls had a very great time in here. The crowd cheered like bunch of army guys in nearly every song and do the Korean Chant.
I got to see the girls live in front of me and God they're breathtaking. Sunny and Sooyoung are both sexy and cute, Yoona is like a goddess, Taeyeon, Fany and Seohyun are really adorable, Yuri always try to keep her image lol, Sica is lazy as ever (but damn, girl look like white porcelain doll) and Hyoyeon is energetic and cute! The girls have their own charms and beauty but I must say Sunny and Sooyoung stole the attention in my standing area. Sunny even smile and point at my cousin's smartphone camera
I'm just glad that the girls love it being here, some of them even looked moved. Taeyeon's eyes were sparkling when I see them singing Forever. They acted super funny and adorable on stage! the girls even hit their usual high notes and seems to lipsynched minimally. There were some microphone problem in some song even Fany's voice when she said 'Indonesia, put it back on!' was distorted

Nevertheless you'll know that they're really sing because I can see them moving their lips but no voice can be heard either from them or from the background music, even with the non main singer girls.
If they come near your living places I recommend you to go watch them 