Because it's funnerer this way.
My muster station on the Wish was A, which was the starboard side of the Walt Disney Theater. During the muster drill, an audio track is played explaining everything. Well, the audio wasn't working in the theater (odd for a new ship) so we didn't hear it until the part of the track that says "this concludes the mandatory muster drill"
Easiest muster drill ever!
Oh, yeah, they scan your key card on the way in to register that you were in attendance.
Also the seats aren't comfortable.