The short answer is simple: peak dates bring more pilgrims to Tirumala at exactly the time when VIP Break Darshan availability can become restricted.Read the full blog: https://www.akonter.com/story/why-tirupati-vip-break-darshan-tickets-are-hard-to-get-on-peak-dates/
To book visit the site: https://tirupatidarshanticketbooking.com/ttd-special-darshan.php