Originally posted by Exroadie I'm going to do some test shots tonight.
That's how I learned - test film in the environment, bring all lenses so you can see what will be necessary for spacing and distances, and of course learn to use the flash and how it works in that setting. I have shot many such occasions and being prepared makes all the difference in the world since you have to work relatively quickly.
I would not hesitate to use Kodak Portra 800 and Fuji Natura 1600 - with and without flash, since I am familiar with their characteristics to the end results.
Flash is a great tool to learn. Of course depending on the environment, on-camera flash is reasonably useful. Manual mode is best but can take a lot of time to be fast in it's use. For grab shots TTL flash can be reasonable given color films huge latitude. Of course the more sophisticated flash types can be even better.
BTW, color balance is probably one of the easiest to correct in post once you test your films. Of course this may depend on your post skills.