I am a photograher and i own my own business and i have a photoshot friday?

I have a photo shot I have to do on Friday, May 25, 2012 at 1 pm at a local park and this is my first time doing a photo shot at a park and I am having trouble coming up with some ideas. I have a few but not very many. The photo shot will be of 3 girls the ages of 9, 4 and 1 1/2.

Keep cool and you control the shoot. Triangle, line, 1 on 1, and individuals. Full body, half, and head shots are great. Do a couple of funny faces to break the mood of it being work for the kids. Let the parent(s) also be in the back ground it will help with ideas and use the grounds (trees, plants and play areas). It will be good, have fun and enjoy your passion.
PS. Capture there PERSONALITY!!!!! Looking at the camera is not always the best shot. If they turn there head take the picture.