Can I not visit tourist attractions in South Korea with a Korean tourist visa?

Of course. The main purpose of a South Korea tourist visa is to allow you to enter South Korea, it does not obligate you to visit tourist attractions while in South Korea. You are completely free to arrange your activities in Korea, such as experiencing the local culture, tasting delicious food, gathering with friends, etc. It is not limited to visiting tourist attractions. However, please note that if you stay in South Korea for a longer period of time or exceed the validity period of your visa, you may need to extend your visa or reapply for the corresponding visa type. At the same time, according to Korean regulations, travelers holding tourist visas need to fill in an entry declaration form when entering the country and may be questioned by customs, so it is recommended to make appropriate preparations and explanations.