I can't tell you if they have changing tables in the men's room at the ESPN Zone in Disneyland's Downtown Disney, but they do have babies in the ladies' room. At least one.
From the LAT: "This seemed to be a surprise to everyone," said ESPN Zone General Manager Ernie Ritchie. "She just felt that she had to go to the restroom. She went in and realized that something was happening that wasn't expected." The 24-year-old woman from Fremont, CA, was assisted by her mother, her grandmother, and some random couple. Baby girl, 6lbs 10oz.
Curled up, she'd be about the size of a football, which is also not expected in April, even at ESPN Zone.
Teresa Salcedo, the first baby born at Disneyland, is 26 (July 4th, 1979), so we know it's not her.
Related, from the TMI dept.: a message board thread where amped up Disney fans share stories of conceiving--or being conceived--at Disneyland.