Well, first of all, it was my first time having double eyelid surgery, so the incision was burdensome, so I had it buried. I am quite satisfied after the surgery, but as time passes, I think I will need to have the incision retouched.
To sum up, I don't think there is any difference in line selection between hospitals.
What is important is the hospital's surgical style.
If you want an incision, go to a hospital that is good at incisions.
If you want burial, go to a hospital that is good at burial.
You must passively go to a hospital that operates in the style you want. Just going to a doctor who is known to be good at eye surgery and asking him to do buried surgery is of no use if the doctor prefers incision surgery. This is because doctors operate according to their own style.
In that case, I would choose buried surgery, but honestly, if there is a hospital that is good at making incisions, I would like to recommend incisions.
Burial is not a bad thing, but it feels like a less certain surgery than incision.