There are definitely fields where the ball carries. College of Charleston is definitely one because of the ocean breeze. (Though it never seemed to help me playing golf at the course next door). C of C is a launching pad. The ball also carries at Georgia Tech, particularly down the RF line. I think it's the way the wind comes off the nearby buildings, but that's just a guess. There are also places where the ball does not carry because of the wind. RF at Clemson, particularly in the early months of the season, is one.
Usually it's all about the wind. But, I have seen some parks where the ball does not carry, but the effect is not due to wind. I don't know what it is. Humidity maybe? Sometimes it varies depending on the time of day. I don't see how the size of the park could have a positive influence on carry, but, since I don't have any other explanation, you may be right.