Why do some traditional customs festivals sustain modern Hong Kong society while other don't? Reflection:100 words

For example:mid-autumn festival chung-yung festival dragon boat festival christmas easter motherday , this festivals still sustain , because people enjoy life, parties, gifts,gathering,nice food , this six festivals can content them but some festival can't content them For example:Hong Kong festival(香港節) this festivals didn't sustain in modern Hong Kong because this festivals exhibition two time before 1971 and 1973 but the second time to compare the first time, 但規模比第一屆為小, 市民的踴躍程度亦大為減低。加上香港政府也認為香港節已經達到其成效，故此之後便再沒有舉辦。( help me to translate into english)but the main reason it didn't sustain in Modern Hong Kong because this festivals didn't have Holiday!!!that's why some traditornal customs festivals sustain modern Hong Kong society while other don't