The room they showed me was simple, but nice and private. I was pleased to find that the room has a private bathroom attached. It is near the entrance, which is not centrally located, so you'll have to plan ahead or take the tram. The room was pretty small, just large enough for a breastfeeding mom and her young children. A second adult or a stroller would have made the room a bit of a squeeze. While I was there, a family was receiving medical help in the room outside of the lactation room. It wasn't intrusive, but I wanted to mention that the space also serves that function when needed.
The Oklahoma City Zoo is also rumored to have a second, newer lactation station (possibly a dual-purpose diaper change station). None of the staff pointed me in the direction of this second room and I'm still curious to see if it truly exists. As always, please post your experiences and comments below! We're happy to hear from you!