I just talked to the admissions office and the Welcome Weekend ("Second Look" type event) will be on Saturday and Sunday, April 9th and 10th. On Sat, 12:30 to 4:30 at the Rec Center with food, pool, basketball, partying, hopefully beer, etc. On Sat night, there will be a social, didn't get the time or location of this. Sunday will be a housing open-house for the student housing (I guess the one that is run/owned by UTHSC, and maybe some houses owned by students, but she wasn't sure about that. I think the whole welcome weekend is run by first year students, and the retreat in August is run by second year students.
I don't know if I will be able to make it to the W/W since I am in Connecticut, but I hope everybody else is going!