I'm seeking advice on language in Seoul. Is English sufficient for my needs?

Hi everyone, I'm Lei. I'm planning a consultation in Seoul, but I'm a little worried about the language. My English is okay, but not fluent; Chinese is definitely the most comfortable for me. I'd like to ask if English is sufficient for a consultation at a clinic in Seoul? Or would it be better to learn some basic Korean vocabulary?

I've seen some clinics online offer translation services, but I'm not sure about the details. Has anyone had this experience? Do you bring your own translator, or does the clinic provide its own? Are there any extra charges?

Actually, my biggest concern is being able to clearly express my needs and questions. I don't want communication problems to affect the consultation's effectiveness. Can anyone share their experience? Thanks!