This study investigates Korean university EFL students' first-hand experiences, perceptions, and attitudes toward the use of generative AI (GenAI) in English learning. A descriptive survey was administered to 73 undergraduates enrolled in compulsory English courses. Results showed that ChatGPT (65.8%) and Google Translate (42.5%) were the most frequently used tools, primarily for coursework and convenience. Although students generally perceived GenAI as moderately effective for improving English skills, many reported limited familiarity and only moderate technological readiness. Over half of the participants indicated they had never received formal training on using AI tools for language learning. Students rated real-time feedback, translation support, and access to diverse learning resources as key opportunities. These findings suggest that Korean universities should provide structured AI literacy instruction to support pedagogically meaningful and responsible GenAI use in EFL programs, particularly within large, mixed-proficiency general English courses.