For me I would say just about everything haha since I live in the US. When I arrived to Korea my thoughts was everyone looks very healthy and slim but I am going to have some problems with communication. The food looked very different but very very good. It was difficult for me to find clothing, my body size is slim with more muscle mass so I had to get shirts that was 3XL. Everyone was very nice that I encountered, hopefully I can visit Korea soon to enjoy more of the festivals