Hello! My family will be visiting the West Coast of USA at the end of this year for 21 days. We are flying into San Francisco on the 21st of December and flying back home from San Francisco on the 11th of January. As the youngest, I've been assigned to plan the itinerary but I'm having some problems. Here's a rough overview:
21/12-26/12 San Francisco
1/1-4/1 Seattle (flight from ???)
5/1-8/1 Portland (by train from Seattle)
9/1-11/1 Drive from Portland to SF
I can't decide what to do from the 27th to the 31st. Parents want to go Las Vegas+Grand Canyon but my siblings want to visit Los Angeles+San Diego. I would love to hear opinions on the feasibility of the two options (time-wise) and also which you think will be more worth it! (based on your experiences of the places during the winter season) Also, opinions on the other planned places will be greatly appreciated. I'm especially worried about whether flying/driving during the Christmas/New Year period will be a problem.
The US is a long journey from home so I really hope to be able to make this trip worthwhile :-) Thank you for your help!