West coast tours from san francisco

Do you have any idea about things to do and enjoy while west coast tours from san francisco as a senior citizen with kids? My sister is willing to try this with her in-laws and needs your suggestions regarding this. So do tell her what should not skip during this.

Well, Personally I have enjoyed this trip from goldenbustours. So, I have a suggestion for your sister. They will enjoy 3-Day San Francisco to Sundial bridge, Crater Lake National Park, Columbia Valley, Mount Rainier National Park and Seattle Tour. It was a best trip to enjoy life there. I think so your sister like my suggestion. They will be back from this trip with great experience.