Good to know that you had fun ✨☺️
I also have that kind of day, where I only want my own company.
Before, I'd say NO and then put up some excuses. My perspective changed when one of my friends died at a young age and we never get to hangout with him again. I felt guilty for saying no when we had the time.
Life is short, we should enjoy and spend time with the people we cherish as much as we could.