Way back when, when we first started going to WDW, I read all those books about how to get around WDW in the most efficient way. They wrote that one person is allowed to stand in line for the whole family. Then at the end, the family can join that person.
I noticed many years ago, that was accepted. Lately, I notice that there is much animosity if you do that even though Disney allowed it.
What is the policy now?