The state here is Florida. Sorry.
Depends on what your lease says about early termination, fees/etc would be listed there, if any.
Also since they are there for 6 months, the place should be in near perfect rent condition. Which means the carpet, paint, etc should be normal. If the paint is already marred up you can deduct that since it would be consider excessive damage for being only 6 months there. Same for the carpet. Different story if they were there 12 years, the courts would say that you should replacing the carpet and repainting anyways and call it “normal wear and tare”
I agree with the other freeper
Consult your attorney over what can be deducted, if anything, have your lease ready as well. Should be listed in there.
Of course all of this can vary from state to state so YMMV
We have rentals in Pinellas county and an excellent property manager. We tried once to play landlord out in CA with less than stellar results. Never again. If you’d like the name of our manager, pm me. It’s money well spent, imho.
Pay your lawyer 500 dollars to write up a simple contract. Hell, he has it on file in his computer and just needs to fill in the blanks. 500 dollars is cheap as compared to losing thousands because the contract was not written well.