Look on the park map for “The Oasis” restaurant. The Oasis is the one that bill said not to get pizza from, right next to the pierogi place. If you’re standing in front of the Oasis, you should be able to follow bills picture to the pierogi’s.
Alternatively, you can follow google maps to (40.8792479, -76.5029650)
Edit, just saw you found them, glad you were able to work that out! I’ll leave this post up here for anyone else that may benefit from it.
1. El Toro
2. El Toro
3. El Toro
4. El Toro
--- I'm not good at ranking...