Go straight out of arrivals and there are loads and organised by taxi marshals very easy and cheap ! I never book transfers from the UK as they are a rip of in the UAE. To put it in perspective I took a taxi from my hotel and asked the driver to wait then he took me back, the meters run on time the journey was 180 minutes and cost £12...
Enjoy the flight the outbound to AUH is a great time of day to fly, nice mixed fleet crew and usually on a refurbed 777-200
The Le Meridian Hotel is a 10 - 15 min drive max