The tour is super well organized, lots of information is provided for you to take the most advantage of it, the hotels were great, they all offered amazing breakfast, also all of them had a restaurant and most of them offered great food. A 4x4 is a most and specially during winter. Our agent was super helpful and patient. Because of bad weather all of our tours were cancelled and Guide to Iceland refunded us with no problem and helped us booked new tours when the weather permitted. I feel the itinerary is a bit ambitious specially in winter when driving times are longer due to weather, the roads are with ice and the daylight is shorter, so my advice is be prepared with the list of things you really want to see so you can prioritize them, the last day is a lot of driving because you are coming back from Hofn to Reykjavik, so be prepared for that. Something that helped us a lot to get familiarized with the itinerary was to create Google Maps using MyMaps for each day so we can get the route and the exact coordinates of the places we were going to visit even though at the end we could not see them all. Try to familiarize yourself with the websites that give you information about the roads and the weather, they will become your main tool when driving in Iceland because the weather can change rapidly (http://www.road.is/, http://en.vedur.is/, http://safetravel.is/), we were caught in a Wind Storm in the South and South East area and the wind and wind gust were incredible strong, some roads were closed some times and driving through that was a bit stressful, so just be ready in case it happens. Iceland is amazing beautiful country, the trip is totally worth it so I totally recommend it and booking through Guide to Iceland will make your life easier.