My mistake Just J,
When you said Croatia/Slovenia - I thought you were talking about the Slovenia - mountains to the coast tour.
For the Croatias Istrian Coast tour please see the following:
Day 1 and day 8
approx. driving time from/to Zagreb airport is 2,00hrs + bathroom break
Day 2 Istria -
Departs at 08,30am and is a full day, about 4 hours on the coach in total travelling between Pula and Rovinj
Day 3 - Lovran and Mošćenice
Approx 1hour 30 minutes on the coach
Day 4 - Plitvice National park
Approx 8hs on the coach
Day 5 - Postojna and Predjama castle (exact times depend on season and entrance times scheduled)
Approx 4hrs 30 minutes on the coach
Day 6 - Boat trip to Krk and Cres (approx. as it depends on season, weather and free time for swimming if weather permits)
Approx 3 hrs on the coach
Day 7 - Motovun
Approx 2 hours on the coach
Kindest regards,
Julia