Are you debating between studying abroad in Hong Kong or Seoul? Can't decide which language to choose?

Hello! I'm a student from Ireland. I'm about to have the opportunity to study abroad in Hong Kong or Seoul for a year, and I'm wondering which language I should learn. Honestly, after watching a Korean drama, I'm a bit more drawn to learning Korean, but I know absolutely nothing about Cantonese ㅠㅠ. What are the difficulty levels of these two languages? And which language would be more helpful for me in the future? Just for reference, I'm at a B1 level in Spanish. For those in Korea, if anyone has had similar concerns, I would appreciate any advice! Thank you~