The best answer, though it feels like a non-answer, is that it's highly variable person-to-person. People who are active on campus (especially if they live on campus), Greeks and people playing intramural sports have much better social lives than people who don't.
The people who don't have a good time here:
- are socially awkward or buzzkills
- treat FAU like a job you attend 9-5 and then leave
- have friends at other colleges and use this as an excuse not to meet anyone, playing the victim card
This is your college experience. You make the most of it, you'll be happy. I did.
As you may know, there aren't Greek houses on campus (yet), so frat parties are at their off-campus houses. There are no "block parties" here. There are parties in the dorms (especially University Village apts and Innovation Village apts) and people's apartments off-campus.
As far as big social events, you have:
- Freshman Foam Party
- Rat's Mouth (student tailgating area before football games)
- Homecoming week (Timucua Pageant, Concert, Comedy show, Fall Family Fest)
- Bury the Burrow in Red (FAU Basketball rallies to beat FIU 73-72 - YouTube
- "The Miami Game" (FAU vs UM in baseball)
- Boca Bash (on Lake Boca) ... Boca Bash 2012 on Vimeo
Stuff like that.