went to a concert there in November 2005 and was disappointed that i paid $50 to be in the floor area and have an actual seat. General Admission floor would have been way better, especially for a rock concert! Check your tickets to make sure you are in a section closer to the stage, or else you cant see anything. The garden has parking underneath owned by the MBTA, so you can take the T around Boston which was cool. However, I felt $40 to park all day was a bit much.
Pros: Parking, Location, Crowds
Cons: parking fees, actual seats on floor, Staff