Apropos of your new locale, my uncle used to live in Rancho and one time when I was a kid we visited in the summer and he let us fry an egg on the hood of his black Rolls Royce. Just a heads up as to how hot it can get there...

That being said, there are some pipe bands in Riverside and San Bernadoo that perform locally in addition to the highland games. You can find their schedules on their websites. And maybe check out this group, they are not too far from you:

https://iescots.com/