It's a gorgeous, especially if you catch a good weather (we didn't)! As for should you do it with RY - definitely not...! We had the worst guide I came across from all of my experiences - lack of attitude, unable to bring energy to the group, mumbling all the time and gave us almost zero information the whole walk. Not mentioning the ciggaretes smell which is filling the bus. He just dropped us in Zadar and we had to wander on our own which I wouldn't expect from a guide and this was the special extra we are paying the premium price... The lunch is not included and it was pricey as well. Anyway, we had a great time on our own, but this would be reflected in MP review for sure.