Alvin's Island is a well-stocked tourist shop serving as a key spot for visitors. It offers a great selection of sunnies, sunhats, bathing suits, and many gift ideas, including extensive Marco Island branded merchandise. The store is packed from floor to ceiling with a wide variety of items. While some find it an awesome selection of great stuff, others note it can feel overpriced. The environment is typically clean, organized, and the staff are friendly and helpful, providing excellent customer service. However, the store can be crowded with a narrow area to walk. Some visitors also note the use of a strong air freshener. It is a definitive spot for tourists seeking souvenirs and beach essentials.