What should I prepare for my first time having cosmetic surgery abroad?

Hi everyone, I'm Huong from Vietnam. I'm planning to fly to Korea for a minor cosmetic procedure, but I'm a little worried about the cost. I've never had this before, so I don't know how much I need to budget for the whole trip (flights, hotel, food, and the procedure itself). Could those of you with experience share how you plan your trip?

I'm also wondering how long I should stay. Does the procedure require a consultation beforehand, and then a recovery period? Has anyone done medical tourism like this before? I'd appreciate any advice on the itinerary. I want to plan carefully so it's not too expensive but also safe and comfortable.

Also, I'm a little worried about communication when I get there. Should I research some clinics beforehand, or can I get advice online? I know I shouldn't blindly trust promises of amazing results, but I still want to choose a trustworthy place. Does anyone have any advice?