J.H.
Hi K.,
I grew up in Northern Texas and moved to Rohnert Park in 1996 and yep, it's colder here but I love it. The McDonald's the other lady mentioned is a good one, there is also a Burger King off of Santa Rosa Ave near Yolanda and a McDonald's right in the same block.
If you're looking for a bit more cultured place Redwood Cafe is on Old Redwood Hwy in Cotati. Some people say it's not the cleanest on their toys but our daughter has a good time (they have tables with toys, color books, crayons, etc). They also have a good variety of foods but kinda pricey. Anyway, if you take the Cotati Hwy 116 exit (DON'T MISS IT because it's the last exit before Petaluma) take a left at the stop light then a right onto Old Redwood Hwy. Stay in the left lane and go straight through the light. It'll be on the left hand side before the Stop Sign. Lots of great little kids places in Cotati and there is a park as well.
Send me an e-mail if you want to get together. I don't have the Texas accent anymore =) but I'm still a Texas friendly person. Good luck adjusting to the cooler temps.