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://darshantirupatitir.wixsite.com/spiritual-insights/post/why-tirupati-vip-break-darshan-tickets-are-so-difficult-to-get-during-peak-dates
To book visit the site: https://tirupatidarshanticketbooking.com/ttd-special-darshan.php