A little history [and booklady, every once in a while I do put a real link in here :p ] on Chino and Chino Hills.
Chino is not China, nor does it have China as an origin. Actually there are more Chinese in Chino Hills than Chino, and there are more Chicanos in Chino than Chino Hills. Say that ten times really fast...
At one point in history, Chino was all groves and dairies. There is still a strong dairy presence, but the groves have been cut down to make way for beautiful tract homes. Bleeeccchhh! Some of the dairies [including the one owned by my wife's late grandparents] have also disappeared.
Chino Hills "seceded" from Chino in 1993 and has been the "high rent" portion of San Bernardino County ever since. Median home price in the Hills is something like $350K. It has also been rated the safest community in the county every year since its incorporation. It's a diamond in the rough for SoCal.
Chino, due to the dairies, has been home to a large number of Basque immigrants for decades now. The Southern California Basque Club, based in LaPuente (west of Chino) is the oldest Basque club around, but their numbers are dwindling while Chino's numbers grow.
The club is alive and active. We own our clubhouse building free and clear and just voted to pay $350,000 to annex an ajoining strip of land in order to increase parking at the site. This year marked the completion of improvements to the aesthetics of the clubhouse, along with an expanded bar (if you know Basques, you know this was a priority

).
The picnic is a fundraiser, but it also is an annual homecoming of sorts for many. Every year you think the BBQ lamb couldn't get any better, and every year it does. It's nice to know that the lamb is fresh, since the shepherds are cooking it...if you're planning on coming, this is what you can expect to see/eat (jan):
Lamb, txilindrón [lamb stew], salad, hard cheese [unless they run out], crusty bread (ogia), beans [the good white, northern beans], wine, etc. [if you're a drinker, otherwise it's soft drinks and agua (uria)]; After lunch, they'll have performances by the dance groups (kids, teens, adults), music, etc.
Also, there are always a few merchants on hand peddling Basque and Spain items. They recently added jamón serrano and other Iberian foodstuffs to the mix...
You'll love it, and it's a great way to spend the Sunday before Labor Day!!!