Went to a couple of games during the 2013 season. One thing I learned is that no one goes to the games. We would buy the cheapest tickets and then sit wherever there were open seats. Spent $6 on a ticket one night and sat in the lower deck behind first base.
Parking is fairly cheap even close to the stadium, found a neighborhood to park in for $10. The food selection is pretty good, though like most ballparks, a bit pricey (but if you're only paying $6 to get in, it doesn't matter).
Great location, only 10 minutes or so from downtown Miami.