We are 61 and 55 years old and we stayed for 2 weeks in Kamari, Rose bay hotel.
It was very busy the first week, very many Italians. The second week was noticeable quieter. Italians start work from 1st of September.
Not a quaint Greek village but very touristy with a kilometre long boulevard full of restaurants. The waiters are a bit pushy to get your custom but after a few days they recognise you and leave you in peace. The food is good and cheap but drinks are sometimes expensive. €3.00 to €4.50 for a 50cl beer and €8.00 for a cocktail is average. Main courses €8.00 to €12.00 but not many vegetables to go with the meal. Greeks are very friendly and even if you don't buy something in their shop it's no problem. Santorini is the most expensive Greek Island and if you visit OIA and FIRA you will find the prices can double. Check the menu before you sit down there.
There are so many restaurants to choose from and the boulevard is car free and flat to walk on. No steps and steep hills as in FIRA and OIA. Kamari is in my opinion the best place on the Island as a basis to visit the rest of the island. We used local buses and excursions from Kamari tours. We didn't need a car as we managed to visit most places this way. There are a couple of English bars in Kamari, The Groove arms plays great music and has live music a couple of times a week. The Liver bird is worth a visit, Wayne and Sheila from Liverpool are the owners. The Arion bay hotel bar has Ilias who is a great barkeeper. Speaks Greek German and English fluently, even tells jokes in those languages. Kamari is not a place for clubbers, hardly any discos. No " Larger louts" and "Chavs" to be seen here, thank god. The water taxi to Perrisa is great experience. We climbed the mountain road to the top of Kamari, takes about an hour up and 45 mins down, worth doing for the great view. We would recommend Kamari to people who like a bit of life at night but also like some peace during the day.