A few things to do in Davis:

UC Davis Arboretum 1046 Garrod Dr.

Great Bear Vineyards 24800 County Rd 101A

Wine tasting Fri 12-4pm & 5-8Pm w/Food trucks and live music. * Reservations highly recommended*

Sudwerk Brewing Co 2001 2nd St.

Fri 3:30-9OPM Sat 11:30-9PM Sun 11-7:30PM

Pedrick Produce local grown produce and their tamales are pretty good.

6850 Sievers Rd, Dixon CA

Ikedas California Country Market local grown produce and yummy pies

26295 Mace Blvd Davis, CA 95616

There are lots of restaurants and shops walking distance from Hilton Garden Inn in Downtown Davis.

If you have more time in the area:

Whitewater rafting -South Fork American River

1hour from Davis 1026 Lotus Rd, Lotus CA

aorafting.com

Old Town Sacramento and Waterfront

California Capitol Museum

You can come visit me at my house, I am 30min from Davis.