My UF interview last cycle was the first I attended and the most intimidating. The atmosphere of many interviewers in a room vs 1 of you is a little nerve racking. Honestly, prepare for the worst. They have many other applicants to get through in the day, so they don't particularly like questions during the interview. And as another person mentioned, they may bring up an apparent weakness. I know I had one W, and they brought it up. All in all, I thought it went terrible, but I was still accepted and even offered a scholarship, so don't let it keep you up at night.