I went back to school at 38 after having 3 kids and waiting until the youngest was in 1st grade. I had a college degree but was fortunate to stay home with my kids.
I did see some drama with some students and not just younger student with no spouses or kids. But I had a focus and that was to learn, study, and get home to my family. I didn't socialize with my fellow students.
There were many other students like me. I'm not into drama and I wouldn't go out and drink like that.
One thing many nurses do not like is stereotypes or blanket statements . . . you did say the following when you only went out with half the class:
Everyone is very dramatic, two faced and backstabbing...you can't trust anyone!
I'm not being all hoity-toity . . . just consider that you are there to learn to be a nurse and that in every group of people the world over, there will be drama-queens and kings.
Stay focused. Leave the rest behind.