UAE is an affluent country, and it's not necessary for Emiratis to be out and about doing their day to day chores, they have other people to take care of almost everything. So, the chance of bumping into a local while in Abu Dhabi is a minuscule one - besides, they like to keep their affairs private. There's one exception to this though; at the airport, you'll have an encounter with the officer who stamps your passport, and that's because it is necessary. All the important proceedings are done by the locals themselves, so you'll see a lot of them employed by Border Control. But it wouldn't be very prudent to get them to talk to you about day-to-day life (sadly you can't list it as one of the activities in Abu Dhabi) the occasion wouldn't be entirely appropriate. What's more, expats surpass the number of locals, and you will see a lot of Asian and European nationals.