I've never traveled with my cat, and I'm not saying she'd like it, but I will admit that concern for her geriatric state makes me reluctant to take long trips away from home. I give her sub-cutaneous fluids every day, so if I'm gone longer than 2 nights I have to arrange with a vet tech from my vet to come help my fiance give her the fluids.
You can search for lodging and dog-friendly parks and beaches. Here's the link to pet-friendly lodging in California. Pickings are kind of slim, but better than somewhere like North Dakota which has one listing for the whole state.
Still, it looks like if you can find a Holiday Inn Express you can find a room for your pet!
Anyway, enjoy...and good luck with the traveling pets!