You have to be there at least 1 hour before the exam. The security is too tight, you are not even allowed to carry your handkerchief with you.
After the security check-up a whole Aadhaar-like screening happens, where all your bio-metrics are taken.

Must have: Admit card, hall ticket, Driver's license, ATM card

To all those who did well in their AIMCATS (without copying that is), the CAT would be a piece of cake. Just wake up the Arjun Rampal within you and maintain a straight face, the invigilators are too nosy.
1st section of QUANT and DATA INTERPRETATION has 30 questions. 10-12 are pretty average, easily solvable. If you could attempt even 25-26, nothing like it.
2nd section of English and LR was a bit tidy. RCs(average to difficult) were plenty(in my case 3). The LR was the most childish thing I attempted in a long time, way below CAT level. All my fears lie with English only *fingers crossed*. Para-jumbles were a head-ache.

If you have been practicing for about 3-4 months then I think you'll be great in the test. Put in all your efforts guys. Do well. All the best! 😀