For spotting areas around MIA
, check out this thread:
Photography At MIA And FLL With 27s In Use? (by GVerbeeck Dec 5 2010 in Aviation Photography)
Regarding arrivals over the city:
When there are westerly winds, they come in just north of the city on 27, and over the Brickell area (just south of the city) on 30. The two runways (26L and R) are further north and may not be suitable as they'll be too far away. Easterly winds are more common though, and the arrival to runway 9 usually involves a flyby close to or over parts of city (usually south of it) but they are almost always high.
If you look at a map of MIA
you can get a better idea of the line up. Also check out flightradar24.com to see live aircraft movement around the city / airport.
As for rooftop bars, I have no personal experience with any of them unfortunately. However, if you're lucky enough to get westerly winds, I'd recommend finding something close to or in the Brickell area. It's scenic and you'll get the traffic arriving on 30.
Nikon D7000 / Nikkor 105mm AF f2.8 / Nikkor 35 f1.8G / Nikkor 50 f1.8D / Nikkor 85mm / Nikkor 300mm f4 AF