is it beneficial to even set up an account if they are there a short time?

You will have to decide that for yourself. The incarceration process goes through many phases. First there is the arrest, the offender is taken into custody and booked in the nearest county jail. The charges are documented and the offender is given a bed whether it is in a cell or a dormitory style setting with rows of bunk beds. The next step is the arraignment where bail is set by a magistrate. If the offender makes bail, then their stay in the county jail is brief, if not, they will be held until trial or some plea is reached. Most people have high hope that the stay is going to be short and we are not trying to dampen the prospects of an early release. You can wait and see what happens, setting up an account early or late - you can decide what is best for you. The account is free to open, the services are what cost money.