The following excerpts are from Translation Times blog:

For the first time, the exam was offered on the computer at Prometric testing locations throughout the country, which seemed like a great and convenient idea in theory.

However, the exam hasn’t been updated to reflect the fact that it’s electronic, so many instructions tell the test-taker to “mark the correct answer on the answer sheet.” Of course, there is no answer sheet.

It appears to me that  Protemetric folks spent a lot of time looking for the worst possible location in which to have a testing center in Vegas, and they succeeded to secure a small office in the back of an industrial area where you take the exam accompanied by the sounds of 18-wheelers backing up right outside the exam room.The headset provided to block out the noise was cheap, hard, and hurt my ears immediately, so I had to tune the noise out by sheer will (a challenging endeavor).

Contrary to what it says on the Prometric website and contrary to the e-mail confirmations received from the testing folks, lockers were indeed available to store one’s belongings, even though the company had insisted they were not. That’s the reason I only showed up with my driver’s license, car key and water bottle and had to leave my purse in the car in a rather sketchy area. Test takers are not allowed to park directly in front of the almost-empty parking lot, but rather across the parking lot. I am not quite sure why paying customers should not be able to park in front of the business they are visiting. Who else is supposed to park there? Employees? Random 18-wheelers? Multiple signs remind you that you will be towed if you park in front of the building. I found this highly puzzling and not very welcoming.

The exam lasts 3 hours and 15 minutes. You are not allowed to bring in your water bottle. Trust me: this is quite brutal in the Vegas summer. For some reason, watches are not allowed either. More.

See: Translation Times