@mmiasma The main characters might be protected by plot armour. But, as a guest star, you'd be vulnerable:

Serenity: guess who might get eaten by reavers?

The Aluminum Falcon: you're going to end up in the prison featured in Andor when you're caught smuggling.

Bebop: probably the safest option, stay on the ship and you should avoid most of the danger.

The Rocinante: if a PDC round doesn't get you, a stroke will.