Top mistake for newbees, not doing their homework! Get adavance copies of the park maps and study them!!!!! You can always tell the people who have no idea where they are going by the "Moses wondering in the desert loook". People waste an incredible amount of time when they have no idea where they are going or how to get there.
Plus, bring at least two pairs of shoes because if they go in the summer one pair is bound to get soaked and take forever to dry! (I made that mistake once, never again!)
Plus, bring at least two pairs of shoes because if they go in the summer one pair is bound to get soaked and take forever to dry! (I made that mistake once, never again!)



Use it
. Just leave a spouse/friend/etc. in line and ask the people behind you to go ahead until your family members come back. Many people at WDW have been there and will understand.
When I start to say the "don'ts" or "be carefuls" I take a deep breath and smile at them (sometimes they look at me waiting for the "don'ts" or "be carefuls"
and it is that more enjoyable for them and me!).