What was part of the culture is not part of the Sunnah that we are rewarded for.

For example, the Prophet salla Allahu alaihi wa sallam used to ride a mule. It is not Sunnah and one will not be rewarded if he rides a mule.

Shaykh there were certain things in the culture of Arabia that is why Prophet [salla ALLAhu alayhi was sallam] did them so should v do those as well ? wil we get reward for them as well? or things which were personal choice of Prophet? And what is the status of following sunnahs of Umm ul momineen in regards to their personal choices, for example bibi Aisha used to like to wear certain colors so should we also give them priority?