A traditional Scottish clan gathering is often referred to as a "Highland Games" or more broadly, a "clan gathering".
From Google….Here's a more detailed explanation:
Highland Games:
While sometimes used to refer to only the athletic competitions, "Highland Games" can also encompass the broader clan gathering, including parades, music, dancing, and cultural events.
Clan Gatherings:
These are events where members of a particular clan (or people affiliated with the clan) come together to celebrate their shared heritage, culture, and traditions.
In Scots Gaelic, a gathering is called "coinneachadh" (pronounced roughly as "kuhn-yak-uh") means "gathering," "meeting," "assembling," or "coming together"
A more common familiar word would be he word "cèilidh" (pronounced roughly as "kay-lee") is another word that often refers to a social gathering in Scottish culture, particularly one involving music, dancing, and storytelling
So maybe a “MacGregor Clan Ceilidh or Kay-lee”?
(But given the propensity for Scott’s to get together we could get a really interesting collection of people together in kilts looking for a good caber toss, hammer throw, and stone put, along with Highland dancing, bagpipe music, and ….. well ya’ll get the idea.

)
Best Regards,
Over Easy
