Party, informally (5)
(Other definitions for beano that I've seen before include "rowdy festivity" , "Celebration" , "Comic - party" , "Kids' comic" , "binge" .)
(Other definitions for rave that I've seen before include "Talk with extreme enthusiasm or wild delirium" , "Talk wildly and irrationally" , "Party with electronic dance music - be wild" , "Rant about an all-night dance party?" , "Laudatory sort of review - quite a rant" .)