Visit the Sri Varahaswami temple before taking the darshan of Sri Venkateswaraswami. As per traditions and legend, Varahaswami owned the seven hills and agreed to give them to Sri Venkateswaraswami with the stipulation that he too is worshiped. Therefore, Sri Venkateswaraswami asked his pilgrims to visit the Sri Varahaswami temple before visiting him.
Carry Extra locks for your vehicle as well as rooms.
respect
While in Tirumala, DO NOT:
Wear inappropriate clothing.
Consume alcohol.
Eat Meat, Egg and Fish non-vegetarian food Considered as Meat in Hindu religion.
Wear flowers - all flowers are for the Lord only.
Spit or litter or create any kind of nuisance.
Carry mobile phone/camera/pager/video camera etc. while going for darshan. They are banned inside the temple inner sanctum.