My team skipped out on the Company Holiday Luncheon

Today was the holiday luncheon at the warehouse I work at. I have 11 reports in my department and 3 were out today for personal reasons. Of the remaining 8, 1 just flat out refused to go up to the luncheon and stayed in the department. The other 7 were transported up front for the meal. When I finally finished transporting my people up front, I looked around and my entire team was no where to be seen.

They all decided to leave the building and do their own thing for lunch instead of staying for free food and to socialize with their peers.

I don't know what to think or how to feel about this.