The walls are about normal distance:  330' in left field, 374' in the power alleys, and 407' in straight-away center.  The elevation make a bit of a difference but not much.  Bank One is actually the second highest stadium in the U.S., but it is only 1,100 feet above sea level.

Parking tip:  Drive a few blocks south of the stadium and a block or two west (Grant & 3rd) and the parking is $5 instead of $15 for the garage.