It is also a time when Colombian television shows many classic religious and family shows -- The Ten Commandments, Ben Hur, The Sound of Music, The Greatest Story Ever Told, etc. (Might I just add here that seeing the Sound of Music in Spanish, where the songs are in English is really strange).
Most families do not eat meat this week, so fish is available everywhere. I spent a week travelling from Boyacá to Ipiales (on the Ecuador boarder) during Semana Santa 14 years ago. It was amazing to see the celebrations in each city. But, I have never been much of a fish fan, so I ate a lot of rice and bread that week.
For adoptive families who are in Colombia, it is important to remember that courts close on Wednesday afternoon, and do not reopen until the following Monday.