I don't think we've really seen much of any holiday surge at the hospitals yet. In today's press conference, Newsom said they were expecting it to hit in about a week or two.
New travel restrictions in CA go into effect when a region has less than 15% of the ICU beds empty. But it won't matter. No real enforcement, so the "rules" are more like "gentle reminders" or maybe just PSAs. "Remember, our ICUs are full, so please wear a mask while skiing this Christmas."