Do not drink the tap water. Spring water brands like Rwenzori and Blue Wave can be trusted.
If you feel like going out, go out, you should be safe, just exercise common sense, Ugandans are very sociable. There are several clubs such as Club Silk and Ange Noir.
For a relaxed drink with an international crowd head to 'Just Kicking' Bar in Kisementi, a few minutes from the city centre. It gets very lively during weekend nights and whenever a major football match is screened. Or if you want a quite and tranquil environment, head to The Lawns Restaurant & Lounge Bar. The Lawns offers beautiful garden lounge bar. Try their wide range of cocktails or wine with amazing starters.
Uganda does, however, have a serious drink problem with the U.N. saying it has the highest alcohol comsumption rate in the world (http://earthtrends.wri.or...), much of this is sold on backstreets, hence official figures don't rate it so highly. Don't let this put you off, the city is still safe even with this undesired tag.
Coffee. Bancafe, at Nakumat Oasis is some of the best coffee, good espresso and they sell beans and ground coffee at December 2010. Cafe Javas, also at Nakumat, is also good. As of September 2011, Good African Coffee in Lugogo next to Shoprite offered an excellent array of coffee concoctions and a good selection of food. Looks like a coffee shop/cafe with outdoor seating, but also offers a full breakfast, lunch, and dinner menu with burgers, steaks, fish, roasted chicken, pitas, salads, etc.
Juice In Dewinton Road, just up the street from Govinda's is a very good juice cafe, offering a huge selection of juices, including various herbal remedies.
Call KN Okot on +256 782 880575 for city tour on foot. You will be able to see any place of your choice including shopping malls, bars, churches, restaurants, museums, craft fares etc.
