It looks like they all had tons of fun! They all received a neon yellow shirt and a pair of crossroad accessories! (glasses and ribbon) I wonder if they had any Ayu masks a la L...
There are a lot of photos!
Source: Reuploaded from various staffers' blogs. (Kayanochii, Kobayashi Shingo, Finemake, 2-YAN, Noda Akira, and others)