If a trip to Lexington doesn't include Winchell's breakfast, then it wasn't fulfilling. Around the corner is Sharp's candies, which is phenomenal. Agree with Josie's for brunch. Saw Big Dawg in there one time, so it's good enough for the UK coaches.
If you're into book stores, Lexington Green is great.
Taco Ticos are scattered around Lexington. Better than Taco Bell ever dreamed of being and have a local cult following.
Evan's Orchard and Eckert's Orchard are nearby in Georgetown and Versailles, respectively.
Malone's steakhouse has a great salad and basically everything else.
Raven Run is a possibility if you're interested in hiking.
The Aviation Museum of Kentucky is out at Bluegrass Airport.
West Sixth, Country Boy, Blue Stallion, and other breweries have great taphouses.
Gatti-town if you all are feeling up to a massive, classic arcade and buffet.
Jacobson Park is nice for a walk or kite flying or whatever. The fields there are massive.
Just be aware that when you're traveling in Lexington this weekend, you'll be contending with thousands of Keenlanders... On opening weekend.
Have fun!!!