Quick example: I saw the Great Ocean Road
while I was in Australia. Five of us from the Hostel crammed into a rented Suzuki Swift at 4:30 am, after being in the bar until 2:30. The original driver claimed he went to bed around midnight, but instead stumbled into the hostel bar at 4:00, drunk as fuck, yelling "I'm driving tomorrow". That story in itself was worth the $175+ we would have paid (each) to take the tour bus. We ran into a tour bus about halfway through. We saw everything they did from that point on, plus 3-4 additional sites. We got to stop for food where we wanted, stopped where we wanted, left when we wanted, and didn't have to deal with the hundreds of people they crammed onto those two buses. And that doesn't mention the added bonus of getting to drive in a foreign country, or the fact the trip cost us about $70 each to drive ourselves, compared to $175+ it would have cost on a tour bus. tl;dr .. don't take a tour. If you don't like planning .. then don't. Just wing it. If you don't get to "see everything", w/e .. you will get to see/do the things you wanted. Nothing more, nothing less.