I think different hospitals work differently.

In the hospital I use, every patient sees their pdoc each and every day for the entirety of their stay. If the pdoc has a day off, another doctor sees you, but you never go a day without seeing the psychiatrist. Each day there were around 6 groups or classes you could attend; they were not mandatory. They varied from process groups (which were sort of group-therapy like) to skills classes to art and even pet therapy, etc.) Individual therapy was not provided, but this was a short-term acute care facility, not a long-term facility.

I found some of the groups actually really helpful (usually the more skills-based or psychoeducational ones were most helpful to me -- the process groups tended to be pretty useless). Some groups I didn't bother to attend because I was simply not interested in their content.

Most short-term inpatient stays are meant for crisis stabilization with the intent to get patients safe and ready to discharge into out-patient care with a private psychiatrist and a private therapist (appointments set up with both are required before discharge from the hospital I use).