How to pronounce 聚餐 in Cantonese (5 out of 6):

喺度喺度聚餐
They're having dinner there.

Cantonese Sentence Breakdown

喺度 hai2 dou6
(slang) "here"; an expression to indicate that someone is here
around
聚餐 zeoi6 caan1
gather for a meal
le5
modal particle expressing exclamation or to invite agreement