Question for the pilots / flight literate on the forum:
I've often wondered how important the distribution of passengers on an aircraft is, in terms of how it affect the weight distribution and balance.
For example, when I've been on particularly empty flights, the Cabin Crew have announced that it's fine to move to a different seat once we're up, but that during take off and landing we need to be in our assigned seats.
Is this due to weight distibution issues, in which case wouldn't this still be the case during cruising? Or is it so that people can be identified should the worst happen during take-off?