Should be, "On New Year's, we went to Manyara"
‘On New Year’s’ is not good (British) English. Either ‘at New Year’ or ‘On New Year’s Eve/Day’ would be acceptable.
The first two words in the audio sound like one Mwakampya. As a result it sounds as if -kam- gets stressed, it being the one but last syllable of the new 'word'. Interesting!