Hi Gigi, to give you something concrete to work with the first thing I would do is shoot some rough footage and place the Cartoon effect on it. It can give you a painted look:
It depends on your footage but as a guide:
Render = Fill
Detail Threshold = 50
Shading Steps = 3.5
Then add the Gaussian Blur effect set to about 1.5
Play with all the settings (except Edge) and see if you can get the look you need.
Once you see how that looks you should then be able to tell the best way to shoot it – you might want to shoot it on location so that the characters and background have the same painterly look – or on the other hand you might want less detail in the background, that’s an artistic decision.