I remember as an adolescent/teen in the mid 1970's, there had been some 'delegates' from Africa that had visited the Toronto DC at Woodbine Racetrack. They wanted to wear their native dress and dance for the audience after the program ended. The convention program then ended at 9pm so it was around 11pm when the dancing was finally finshed and the crowd went home.
I seem to recall this occured in two consecutive years and it may have involved Kingdom Melodies as the dance music as opposed to 'wordly' music.
Prior to the third year, it was announced at each congregation that there was to be no more entertainment as that was not appropriate at the DC as that was JAH'S place of worship and was to be used for spiritual matters only.
Seeing what goes on now, it appears they are doing exactly the things they critisized other religions for doing. I guess desperate times call for desperate measures.