Trip to Reno and on to Sonoma

Need some advice please. We are taking the AS to Reno for a dog show in August for a weekend. On Sunday mid-day we are headed for a point near Sacramento looking for a place to drop the trailer for about 5 days. We will take just the truck back to Oregon and on the following Friday drive back to Sacramento to pick up the AS and then head to Sonoma for another show on the weekend.

My question is any suggestions for RV parks in Reno and Sonoma and also a place near Sacramento to store it for the week between?

Thanks for the help.

Mike