It depends on whose kids you ask. The absolute #1 favourite place to be in all of Disney for my kids is World Showcase. My son is a very adventurous eater who would love to taste his way around the world.
Do you see ppl drunk at 5,6, even 7 o'clock? No. Usually it's close to the end of the night. If they're that young-going earlier is key-older-later.