does it have bathrooms

Yes, by the childrens playground.

The third set is at Union Turnpike and Winchester Blvd.

Yes they do, as stated above in several locations

There are 3 sets of bathrooms, one off Springfield Blvd. One in the middle by the adventure obstacle and soccer field, and the last off of Commonwealth Boulevard and Union by the baseball field and Tennis Courts.

Yes. And they're clean.

Yes, quite a few!

Yes, though they are not always open. (I believe they get closed at dusk.) Also, they DO have INSIDE the environmental center (on Northern Blvd) as long as that center is open.

Yes 2 Bathrooms

Yes

Alley Pond Park is gigantic. It ranges from Union Turnpike all the way over 2 Northern Boulevard Woodside the park is separated. And there is a bathroom in any part of the park that you may be at except for the Environmental Center on Northern Boulevard. Cuz you can use the bathroom inside there but it's promise Union Turnpike side there's a men and the ladies bathroom there