A person attending a promenade concert and choosing to stand in the area without seating; a promenader.
 the prommers kept audience participation to a minimum
 Example sentencesExamples
-  A new Weekend Promming Pass offers prommers around the country the chance to beat the queues and save money.
 -  Actual prommers - ie, those who queue for cheap standing tickets - tend to come from London and are buying as eagerly as ever.