This city located on the edge of the Plaguelands in southwest Radavan is founded on a series of oasis in the middle of the desert as a stopover of trade, and has grown to be a hub of gambling, excess, intoxicants, and poor judgement which begat its name. Just about any entertainment can be found here - brothels, spice dens, barrooms, dance halls, even gladiatorial matches. Just below the shiny exterior meant for the wealthy travelers who frequent the city is a dark underbelly of squalor and crime.
Magic of any sort is banned within city limits of Vice through a powerful mix of superstition and business interests. The city state is ruled by a body known as the Consortium of the Elite made up of the most powerful mob bosses who wield a great amount of economic power over a majority of working poor.
Radavan is roughly the size of the continental United States in our world, so as a shorthand there is often a real-world American city analogue to the city-states of this continent. For example, Vice is analogous to the weather and geography of Las Vegas, NV.