Congratulations on the interview.
My information is quite old now as I interviewed 3 years ago. The format of the interview has changed in the last year.
You can review the book " Preparing for your Emirates Interview " by Captains X, Y, and Z as well as "Understanding Performance" by AJ Walters. That would be a start towards the technical portion. You may need to go further with "Aviation Weather" or as a friend of mine who interviewed recently suggested " Ace the Technical Pilot Interview ".
The Tech quiz is a minor portion of the interview. You should try to do well on it, but you won't be asked any technical questions other than during the quiz. The key to doing well on the interview is to get along well with your group and the interviewers over the three day period and to fly the sim to a decent and safe standard. I guess that could be said for any interview so I'll expound a little.
The interview is over a three day period. I'm not entirely certain how the new format works, but you will do the tech quiz and the sim on the first day. You will also do a psychological assesment and group exercises. Not sure the order in which those occur. After the second morning there is a cut. If they want you to stay they will tell you and then you'll do more group exercises, the one on one interview, and a tour of the Emirates facilities along with a mini-medical.
The group exercise are designed to see how well you play with others and to assess your leadership/followership skills. Sometimes you might feel the need to take the lead and sometimes you may just try to be of assistance. It's better to strike an equal balance, don't be too passive and don't be too bossy.
The psychological assesment is scarily accurate and will be debriefed by a trained psychologist. It is an important part of the interview so it's best to be honest.
The sim profile was a takeoff in visual conditions to a visual pattern for a landing without A/P, A/T, or F/D. Then a takeoff with a V1 cut, vectors to a VOR, intercept a radial outbound, vectors to an ILS all with A/T and F/D. You either miss the approach or land off that ILS and then reposition for a Raw Data ILS to either a missed approach or a landing. Biggest advice for this is don't hesitate to miss the approach if you are outside of stabilized approach criteria. Most people who miss the approach get hired whereas those who push a bad approach don't. It can either be done in the 777, A330, or A310. Based on your experience I would guess the 777 or 310 are the likely candidates. You use your airline procedures and callouts, the guy in the other seat will modify them as necessary to make it work. CRM is a big part of this assesment as well so work on how you want to approach that. At Emirates you can't brief enough so think of some good long winded briefings especially for the visual pattern.
It also wouldn't be a bad idea to look at the Emirates website to check out where and what we fly as well as what we have on order. You know the typical know your airline type of info that you can thread into interview answers to make it look like you've done your homework. It's a also a good idea to understand the basic principles of Islam and the history and current economy of Dubai.
Emirates does not provide travel to the interview. If you are currently employed and can get ZED tickets or ID 90 that would be the best way, but flights to and from Dubai tend to be very full so you may want to get yourself to Europe on a ZED and then buy a full fare ticket. That's what I did and it worked okay. Emirates does now serve JFK, but that flight is very full this time of year. Malaysian out of Newark is another possibility. The good news is that when you do get here the hotel is paid for and an allowance for meals is provided so you only have to pay for the beer you now owe me for this gouge

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TP