Update:

So vet gave antibiotics and fluids, we will be repeating every 3 days. Also did a fecal since "Vader" gave us a present at the right time. No added moisture at the moment. He did say both approaches have benefits. Dry helps, but moist does too, it depends on the case and species of snake.
He was appalled that anyone would ship this time of year. He also mentioned that the male I bought and needed so desperately to breed for me (Like now - which isn't happening), looks like a female. So when we go back on Thursday he will probe to double check.
So wishing I could take this purchase back!