The way I remember, when they change the ESPN club to the teen club, they'll open "The Cove" coffee bar and open the back part of deck 3 to a family type sports lounge. We were on the last voyage of the Magic last Sept before dry dock, and then in Jan, it was totally different!
I've been told the Cove is also a cigar bar, but no one was smoking in Jan. They also have 4 (I think) computer stations, so you don't have to contend with the teeny boppers having a party in the computer lounge. That only happened once on our 4 trips, but it sure was annoying! The Cove is actually in an 18 and older area, so unless the kids are walking through, they aren't supposed to be there.
Kelli