You can get a Visa on your arrival at Entebbe International Airport at the cost of $50 per person. We advise you to bring the amount in cash and avoid other currencies when paying your visa at the airport.
Yes, generally malaria prevention is necessary in sub-Saharan Africa. You should take appropriate preventive medicine and use adequate protection to prevent mosquito bites (mosquito repellants). We recommend that you visit your physian to have the appropriate medication for you.