A really enjoyable, relaxing trip. Accommodation was excellent in all places, our guide Cecile was fantastic, Greek food is wonderful, and the walks were brilliant. Everything was well organized. I hadn't been to the Greek Islands before, and this tour was the perfect introduction to this beautiful corner of the world. Santorini was overflowing with tourists (there were three cruise ships there when we arrived, and the chaos at the ferry terminal--which is not where the cruise ships go--was truly something to experience) but everyone should visit this stunning and unique island once in their lifetime. The walk on Santorini was incredibly beautiful (although hot--very little shade). Naxos and Paros were more laid back, also stunningly beautiful, and exactly what I dreamed the Greek islands might be like--I took SO many photos! You have some time to explore on your own. The walks are not difficult, and the pace matches the group--steady but no rush. You need sturdy walking shoes for sure, but not boots. If you often walk with a pole, bring it as paths are rocky and uneven in many places. You do spend a fair few hours on ferries but that's part of getting around between islands, so bring a book and enjoy the experience. I'm sure all groups are different, but ours was a really nice mix of people from the UK, NZ, Australia, and the US, with a median age in the 50-65 range. If you're even thinking about this trip, don't hesitate--just book it.