I've learned to just ignore the strike zone in LLWS play - from what I understand they are told what to do; otherwise, games may not fit into the 2 hour time slot... Left and right - take it, up and down - be careful.
Mechanically w/ 3 or 4 man and U3, typically during the pregame the plate guy will tell you what he prefers (cutout or up to the bag) and it's his call. I have to assume that for LLWS like CDP, the "powers that be" tell you exactly what *they* want. In any case, whether it's 60 or 90 feet, balls down the line can get there in a hurry. I've always found the one down the 3B line the hardest especially with a RH batter - there's usually 2 people close to you and 2 people further away blocking your view.
Surprised no one mentioned the coaches interference call at 1B when the coach in the coaches box got hit by an errant throw and the BR was called out... My son says to me - if it's going to be close, then I'm just aiming for the coach after that ;-)