Hi,
You should not be worried, all will go fine.
There is no such thing as secure jobs, specially today. I have lost my job many times in the past and I am currently jobless.
UAE is a unique experience and honestly the best in the gulf region in terms of freedom.
The experience of working abroad will be a good thing for you both, who knows you might like it so much, that in some years you might end up in another country.
Another good thing is to be able to mingle with new cultures , and here, there are plenty.
If you are having free accomodation, and all those benefits mentioned; it gonna be great for your pocket, accomodation can be very expensive and specially in Abu-Dhabi. I know many couples living in Dubai (due to cheaper rent rates) and working in Abu-Dhabi. It is not that far traveling from one city to another the petrol is quite cheap (cheaper than mineral water), but it can be a burden on a daily basis.
Another good thing, is the easy travelling you can do; Dubai airport is a hub, and there are thousand of options to fly across the world from here. There are low costs and there are the main national companies such as Emirates and Ethiad airways. Emirates airlines ( has arround 150 worldwide destinations) and you will be suprised that many fly as far as Buenos Aires, Melbourne, NY, Cape Town or Tokyo and all direct flights. You can fly low costs (return tickets) to India, Sri Lanka, Nepal, Bangladesh, Lebanon, Jordan and many more as much as 120 Euro. You can even just go for the weekend.
Beeing able to travel here is essential for you mental sanity, life here can be difficult as well.
The summer is very harsh, to much heat and humidity.
Many hibernate during the summer period (stay home or go on vacation). So going down to the beach or do outdoor activities can be frustration.
Lack of wild green, forest and clean fresh air can affect you, though there is plenty of gardens and greenery arround the city, it always looks very artificial. To trimmed and planned.
People as well can be very artificial, manly because everyone is in transit... only few settle for long. Many marriages and relationships are broken; Dubai has one of highest rates of divorces between expat community.
The lack of cultural options can be frustation though many think that is not really important since their culture is to go down to the mall. The cities are not built for human scale, so is natural you drive everywhere and that will definitely help you become less active. Abu-Dhabi still has an exellent corniche where you can have a jogg or do a nice walk.
Try to get active with sports or any kind of activity, it is common to put on weight when you arrive.
Going out for a drink is common and there are plenty of options, brunches are very common and there are singles and couples that have a degree on going out, in fact their weekends are spent drinking and recovering from previous nights.
If you are looking for nights out, you should head Dubai, there is more and better offer.
There are some strick laws on alcohol, drugs and crime, but in the end, all works up well, there is hardly any crime here.
Drop me an email if you need aditional info