no, it depends on yr supervisors.
some will let you, like ours let us have any drinks (non alcoholic of course) or any food whose consumption would not disrupt other students (so like no chips or anthing like that)
Well, one of the teachers at my school thinks that you can take in a bag of lollies if you want to. I'm not really sure about this though. But yeah I can also confirm the clear water bottle thing. I assume if you take lollies in you'd have to take them in a clear bag as well, just like how you have to take a clear pencil case in.
We are allowed to take lollies in a clear plastic bag and a unlabelled bottle of water.
yay lollies!
The reason the lollies are allowed is because when you're in the exam room for such a long time, your blood sugar levels drop and you need to maintain a higher level to concentrate etc.