UNC Summer Classes Question

I am a UNC transfer student considering taking 1 (maybe 2) summer courses in the second summer session. I was wondering if anyone familiar with the summer session could share some insight on the following:
Quality of teaching… How is it compared to the regular academic school year? Is there a good chance I’ll get to know my prof on a familiar basis, on that note…class size?
Social life… as a transfer student I’m hoping this will be a semi-decent way to make a few friends? I’m unsure because at my previous institution the summer program was sparsely attended and we did not have an option to live in a dorm (which I will likely chose to do). Can anyone speak to their social experience during the summer sessions, and specifically dorm life in the summer time?