After the concert is announced, graphics on Talla's console shows seating laid out as ten rows of twenty seats each. At the actual concert, audience seating is laid out as eleven rows of eighteen.
During Bortus's performance, the ship is seen to be empty, with every single crew member in the shuttle bay watching. A ship would never be left without at least a skeleton crew to maintain ship's operations and react in case of a sudden emergency.
Officer Grayson tells Ensign Bolobar that part of the reason he should wear uniform is to clarify his rank. However, several other crew members, such as Yaphit, are always completely nude, yet nobody seems to have trouble remembering his or the others' rank.
After healing Charly's leg injury, Claire tells her to try standing up slowly. Charly them proceeds to stand up very quickly.