I love the holidays for so many reasons. The one reason related to BART is that during the holidays, especially starting this week, the trains begin to get emptier because more and more people go on vacation. It's now 12/20 and the passenger volume has not declined at all yet! Maybe since Xmas day is Sunday, people are not taking as many days off!
I haven't gotten a seat yet this week. I'm hoping tomorrow will be the day when empty seats are not as hard to come by.