most cambridge colleges celebrate may week with a may ball (which actually falls in june), but since the early 1980s king's has instead held a june event (a more informal version of a may ball) which they call king's affair. the reason they have a different event from other colleges is because many students who were not invited used to forced their way into the party (so-called "gatecrashing"). a ticket usually costs around £60 which is cheap compared to the may ball tickets for other colleges which can cost up to £200.