Does Avis charge for Shabbos when renting a car for the weekend?
they only charge for insurance+tax (about $12)
best would be to go through an agent. I highly recommend Moshe Lieberman if going through Avis.
So do I need to get a separate insurance aside from what my CSP will cover for a rental in Israel? I heard that I need some kind of 3rd party insurance or something like that. Any insights?
yes. Do yourself a favor and go through an agent.
a friend of mine went through Priceline original quote was 400 when it came to paying they charged 800.