Tirumala draws pilgrims year-round, and the difference between a smooth two-day visit and an exhausting one usually comes down to which darshan you book and how far ahead you book it.
Sarva Darshan is free and open to everyone, but the queue time swings widely with the season — sometimes clearing in a few hours, sometimes taking most of a day. Special Entry Darshan, a ₹300 ticket, shortens that considerably. Suprabhata Seva and the other early-morning sevas need advance booking through TTD's official portal, and slots for busy weekends and festival periods fill up weeks ahead, so this is the first thing to lock in once travel dates are fixed.
Tirupati is roughly 570km from Hyderabad. Flying into Tirupati airport turns what would be a nine to ten hour road trip into about an hour in the air; an overnight train or bus is the other option if you'd rather not lose a travel day at either end. From Tirupati town, TTD buses run the winding road up to Tirumala, and the Alipiri and Srivari Mettu footpaths are the traditional walking routes for pilgrims who want to make part of the journey on foot.
A few things are worth knowing before you arrive: the hair-tonsuring halls at Kalyana Katta run continuously and are a first stop for many pilgrims, the laddu prasadam counter has its own separate queue near the exit, and plain traditional attire is expected — and enforced more strictly — for some of the special entry queues.
Weekdays are noticeably quieter than weekends, and the Brahmotsavam festival, usually held in September or October, draws the year's largest crowds. Unless that specific festival is the reason for the trip, planning around it makes the visit considerably easier. We book darshan slots and transport together as a single itinerary, so the trip is built around the time you actually have rather than around whatever queue happens to be moving that day.