there is a great thread on the Newbie board about what all of the abbreviations are for - it really helped me when I first joined here. ADR is Advanced Dining Reservation. It is what you get when you make a reservation at a Disney restaurant. For example, we have an ADR at Biergarten on June 1st at 6:30. We will get a confirmation number, which is called an ADR number. Hope that helps! As far as child swap, that means when you are in a park and a ride has child swap, you can ride first while another member of your party waits with the child who is too small to ride, then when you come back, the other member of your party gets to go ride with a Fast Pass - they don't have to go wait in the regular line. It works great when you have little ones! This next trip, our youngest should be tall enough, and we won't have to use it! Good luck!