We had a great time at the splash pad, although as expected Christopher was not too interested in actually getting wet. He spent a lot of time doing this - standing near the wall watching. Later, he did actually play in the water a little, but I forgot the camera was still on video so I don't have any pictures of it.
Patrick was interested, but didn't like getting very wet.
Christopher did have a blast at the little playground not far from the picnic table we took over. He was there most of the time, and as a bonus it was covered so it wasn't crazy hot.