Great to know that you went on pilgrimage and the height of the journey that you were with the grand daughter. Surely that would be enjoyable to go pilgrimage with entire family and when everything happens without hitch, the journey would be more fruitful. As the schools have opened in TS and AP, the rush at Tirumala seems to be subsidized, otherwise there is 9 hours time slot given for the pilgrims to have the darshan of Lord Venkateshwara. Nevertheless your trip was successful and had a peaceful darshan at the Balaji and other temples. Normally pilgrimage during summer would be sultry,
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease