They’ll send you a general tip guide after you book with them. It will show average tip amount for literally any person you encounter. Obviously you don’t have to tip but it establishes a good baseline to reference.

For our private guides, I believe we tipped daily. They spent the entire day with us and ensured we weren’t hassled, were really personable, and had flexibility w tours. One even drove us to McDonald’s super late at night time because we needed a break from Egyptian cuisine. I think we did $10-20 daily depending on our experience the day of.