First time getting cosmetic procedures done in Korea, I'm worried about budget and schedule

Hey everyone, I'm Oanh from Vietnam. I'm planning to go to Korea for an aesthetic procedure, but since it's my first time, I'm pretty overwhelmed with the planning process. I'm not just worried about the cost of the procedure itself—I also need to budget for flights, hotels, food, and everything else. Does anyone have experience they could share to help me out?

I'm wondering how long I should stay there to make it reasonable? Is 5-7 days enough, or should I stay longer? I've heard that some procedures require recovery time, but I'm not sure exactly how many days I'll need before I can get back to my normal routine. Plus, I don't even know where to start looking for detailed information.

The pre-procedure preparation period is pretty important too—do I need to contact the clinic beforehand? And should I set aside extra money as a buffer? I want to plan this properly without putting myself under financial pressure later. Can anyone share some advice or personal experiences with me?