Dave wrote:

Neither is the Meadowlands or Shea, but people find a way. It's not a
horriblly long walk from the 8th Ave 42nd or 50th street A/C/E stops,
though.

The Willets Point-Shea Stadium stop on the 7 train is in the right-field
parking lot of Shea Stadium (and right across the street from the Tennis
Stadia, too). In fact, it's possible to watch a game from the subway
station itself.