Like PP have mentioned, the "ice breaker" event takes place well after the second seating. According to my navigator it was at 10pm. My DD often attended many of the Edge activities after our second seating dinner.
The ice breaker is a basic intro of all the kids and crew members. Great way to kick off new friendships! There are lots of games that are repeated all the way through the week. I would suggest that if your child has a smart phone, download the navigator app. There is a built in messenger that you can use to communicate with each other and it is FREE to use(no cell charges apply). And if your child makes friends that also have the app, they can swap navigator numbers and plan meet ups and which activities they are going to!