In four days I will be attending a 1-year-old boy's birthday party at his parents' house around their swimming pool. The light will be immensely bright. I will be using FP4 Plus in my Leica R8 and M6 TTL. I am in need of information about, perhaps, reducing the film speed from ISO 125 and changing the development time from the standard at that ISO to something else in order to capture shadows accurately yet not blow out the high amounts of highlights that will be present since the pool is surrounded by bright cement. Since I know nothing about the Zone System, can someone give me some concrete recommendations in detail as to film speed, developer, developer dilution ratio, and development time that work for you in similar or identical circumstances? Thank you, thank you, thank you!