Not really. I didn't "go" as a spectator but I did go to the '96 Olympics in Atlanta as an employee.
It was the summer after my freshman year at ATM. I was going home for the summer, but my sister who lived in Atlanta asked if I wanted to come out and work.
They had more work to do in the city than they had people.
So I went and got a job for the staffing agency that hired for the ACOG (Atlanta/american ? Committee of the Olympic Games)
All I will say is, it was tremendously crowded. I kept hearing the city had 4x its normal population
So, getting tix, etc… I don't know anything about it. I will say be prepared for crowds