La Jolla is an amazing spot, you're going to love it. The beaches are definitely a must-visit, La Jolla Cove is gorgeous and perfect for swimming and snorkeling. If you're into kayaking, rent some gear and paddle out to the nearby sea caves, it's a really cool experience. For shopping, head to Girard Avenue, it's lined with unique boutiques and galleries. If you're looking for some scenic spots, take a walk along the coast and check out the views from Windansea Beach, or hike up to the top of Torrey Pines State Natural Reserve for some breathtaking views of the ocean.
