Bought a twin city ticket which includes a free shuttle service to and from Dubai. Recommend seeing Abu Dhabi first as it is the capital city of the country. Abu dhabi has a lot of unknown interest and hidden gem such as the Sheikh Zayed Grand Mosque, a true marvel and engineering feat, and most of all a stunning piece of architecture. The shopping malls are nothing compared to Dubai, so don't expect much. However the rest of the city makes up for it. The tour has great commentary and visits all of the Abu Dhabi island.
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