Seriously. Zac had opened ours up on Saturday, and when we went to Grayson's for a playdate on Sunday morning, they too opened theirs up.
Alice and Grayson enjoyed jumping and playing on the pull-out bed. Simon stayed focused on the trains.
Back at our house, the living room was hopelessly messy, but the kids had a great time playing hide-and-seek in the tunnels under and around the pull-out bed.