Depends on how you do it and where in So Cal.
1st of all I think your off to a bad start if your doing any yard work other than shaking your welcome mat more than 3 good shakes in the morning.
We spend time in (LA) Orange county and Bakersfield area. LA area is hard to RV in, so spend some time thinking "out of the box" on where to park and what to do. Such as "5 days out of 30" in kids driveway in Orange County is more than enough for us, then off to another place. "Another place" for us is moving to an area that we will be camping over the weekend with grandkids that will have weekend with us. Then after parents pick them up on Sunday we'll spend quiet time together and then will move on Monday or Tuesday. Etc, etc...
As far as BBQ in back yard lets just say Dutch Oven cooking in driveway has neighbors taking evening strolls by his place. Darn what a upside down pineapple cake won't do.
Costs...We do not pay what some places want. $60.00 to $80.00 a night to park is nuts IMO. I don't need entertainment, I'll make my own. Even if its watching the wife look stuff up to do on computer.
Right now
http://www.metrolinktrains.com/ has a deal on weekends for $10.00 and ride all day. You can stay way up near Lancaster and go about anywhere from LA on down to San Diego. So it depends on where you park. I must admit adjusting screen on lap top because of sun is rough duty.
OK got to go, today is a "move" day. Going to Yuma today, staying until spring break.
Life is rough