The "90 Days Visa" service on the Dubai Shopping Festival website provides a hassle-free way to obtain a 60-day UAE tourist visa, with multiple options available for single or multiple entries. The service ensures a smooth application process with online support, including assistance with required documents such as passport copies, return tickets, and hotel bookings. It also offers various payment methods, with a dedicated team to guide applicants through the procedure, ensuring a quick visa issuance.