I think it depends on the hospital, location, and funding.

I've been in two. In the first I was in the hospital for 4 days and saw a psychiatrist for a single 5 min session where it turned out to be I was misdiagnosed. I was followed around the remainder of the time by students. As for activities, this hospital not only had them I was required to attend a minimum of two a day. In addition I had to attend various information sessions - like a lecture from a pharmacist. I was discharged with no follow-up care.

Hospital (2) I saw a psychiatrist and students daily. In addition I regularly met with the 4 of them to discuss what was happening to me. Thus they included me in the decision of my care plan, etc. What this hospital lacked was any kind of activities. They had one activity every other day. It was usually a walk or the opening of a pretty sadly stocked art room. There was no therapy. On a positive note my discharge plan was well communicated. It included follow-up care weekly for 3 months.