In the first sketch I still had a little bit of light left in the landscape where you could just make out colors. My concern though was capturing the values of the scene the best I could.
For the second sketch I went around to a different part of the park that would give me a view of some water and the moons reflection.
As you can see in the picture I had my Mighty Bright light clamped on to my easel giving me enough light to see with.
Now I have some reference material to use for studio paintings that I have confidence in. I had taken photos too but they were useless, they just don't capture what the eyes really see.