26 m going to inpatient. What should I expect

Finally got insurance to check about treatment after 26 years and I’m basically told that it was an emergency to start inpatient treatment in two days.

They told me that being a black older man causes me to get studied more and I’m needed asap. They even sent me out of my first therapy session to immediately get my blood drawn a couple miles away and come back.

I have two questions.

Is this quickness and urgency normal for inpatient treatment?

But more importantly what is inpatient like because I’m actually scared and didn’t know I would have to make the decision so quickly.