Throughout your trip, it's best to rent a car to ensure you travel at your own pace and can explore with smaller commuting costs. Uber and Lyft are ride-hailing services you can utilize to get around the city quickly. Taking the Pomona Transit Center can help you move around and get to specific destinations faster.
If you have more time, adding a visit to the Cal Poly Pomona University Kellogg Ranch or the Fox Theater Pomona is a worthy option. If you have less time, it's prudent to explore the Museum of Art, Shady Grove Park and the American Museum of Ceramic Art as they offer something for everyone in a shorter timeframe.