Apply online instead
Arrive at least an hour early.
The doors will open and you can walk in and take a seat with the other 500 or so who will show up. One by one you can walk to the front and hand over your cv to the two ladies who usually do the recruiting. They will only ask if your name and contact number are on the CV, and check that your photos are there. Then you go back and sit down.
Next, they'll play a video about EK, followed by a question and answer session.
That's it. Wait for a phone call.
To be honest, if you don't get asked via the online application form to an invitation assessment, then I wouldn't bother going. The day attracts lots of weirdos, and the two women who do the recruiting have an unusual habit of selecting girls who look just like themselves.