Did it in winter?
Even difficult in winter also.
Since at Agra college,our favourite passtime was taking a round of Tajmahal on free entry friday.
Been there over 50 times in different time of a day and night but never more than 5 hrs. at once.
I did, because i was getting huge opportunity to talk with stranger and i was very exited to know about different culture and costume which was my life changing experience.