Do I need to speak Korean for consultations in Seoul?

Hi everyone, I'm Nga from Vietnam. I'm planning to fly to Seoul for consultations about some aesthetic adjustments, but I'm a bit worried about the language barrier. I can speak basic English and fluent Vietnamese, but I don't know any Korean. I'd like to know if I should bring an interpreter when going for consultations at clinics, or if English is sufficient.

I also don't know what to prepare before calling to book an appointment. Are there places that specialize in serving foreign clients, so they're used to this situation? I'm afraid that if communication isn't good, the doctor won't fully understand what I want, or I might misunderstand the procedure and risks.

Has anyone been through this? How did you solve the language issue? I would greatly appreciate any advice!