Very much enjoyed the Big Bus Hop on Hop off tour. Took the city bus from Abu Dhabi early, and caught the Big Bus immediately. Every half hour a bus is available. The narrative is in 10 languages and while it was a good narrative, had some time to tell us more about the culture or other facts about the city and country. Too many Big Bus commercials. We're already on the Big Bus Tour - commercials aren't appreciated.
Of course, the Burj Khalif is the highlight of the trip but there are many sights to see.
Abu Dhabi's Big Bus "hop on hop off" is not quite as good. The bus only comes every hour, which may leave you too long at a location and unless you start early in the day, will run out of time before you run out of stops.
Have a good trip.
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