Re: Are they cadets or are they officers?
Kirk and Uhura: They are cadet/officers like Saavik in Wrath of Khan.
McCoy: He's a Doctor so he gets to be Lt Commander.
Sulu and Chekov: Might have graduated with the previous class. Chekov is a progidy so he went through the academy even quicker than Kirk.
Normally Kirk would probably be slotted in as a navigator or helmsman
Chekov is command track and Uhura is Services/Engineering. So Chevok is in the chain of command and Uhura isn't. Her rank isn't a factor.
The boring one, the one with Khan, the one where Spock returns, the one with whales, the dumb one, the last one, the one with Kirk, the one with the Borg, the stupid one, the bad one, the new one, the other one with Khan.