Boimler is ambitious but kind of clumsy and awkward and stickler for rules (despite the boimler rule). Mariner is basically Ferris Bueller with the mouth of a sailor until her friends/family are in danger and then she's MacGuyver/007. (I also just realized I'm dating myself a lot of those references and I hope they still work.) The show is definitely written by fans of star trek that also are comfortable enough to poke fun at the source material.
Edit: that's probably enough to enjoy it, but I haven't seen it yet so don't know if they reference any lower decks story arcs heavily.