Grandfather just relocated from another part of the US. Grandfather lives in a close town during the week and only is in hometown during the weekend.
Grandson works 6 days a week in another part of the state, and is usually home on Saturdays, but has a group trip with his coworkers on the grandfather's birthday.
It was just a bad timing coupled by poor time management on one side and we had plans that were not canceled, just a no show on the grandparent side. Which is frustrating.
Now grandfather is upset, realizing he won't see grandson for two weeks, because there are other schedule conflicts.