When travelling to these usually isolated archaeological sites here in South East Asia I always carry sufficient fresh bottled water for the day. Due to the extreme heat and humidity in the tropics it is amazing how much water you drink. Dehydration can so easily come upon you it is so important to drink lots of fresh water. Be careful also to check the screw caps on the bottle tops to make sure that the seals have NOT been broken and the bottle refilled with tap water.This happened to me unfortunately which created terrible stomach problems.
A wide brimmed hat and a good pair of sunglasses is a must
ALWAYS BE AWARE
officially, prambanan is closed at 8 pm, but just after sunset, we were told to leave. we stayed a bit longer to take more sunset photo but then we realized, the gate was locked already! i was raining so hard and we were locked inside.
we had to climbed the fence to get out :(
Be prepared to be attacked from all fronts by VERY persistent touts (they are there, at the tourist attractions of Borobudor and Prambanan) who will do anything to get your attention and make deals with you to make a sale. Quite a few could tag you for half an hour or so, bugging and harassing you. It could really get irritating.
Keep your calm, do not establish eye contact and keep on walking. Better still, pretend they are not there.
Like it or not, this is how things operate here in Borobudor & Prambanan. If you are an overseas visitor, you have to be subjected to a higher price for the entry tickets (as if flying there wasn't expensive enough).
Under the pretense of national pride, Prambanan costs US$6 pax while Borobudor costs US$9 pax for overseas visitors while The locals enter the park only at a fraction of the cost (almost one-tenth).