[chrondi]

Dear Chuckpeck,
if I understood well your message, you plan to charter a skippered 40' foot yacht out of Paros, mid-June.
It is early in the season and probably the much dreaded meltemi local wind will not blow that hard to cause you any problems. On the other hand, your skipper will make the right choices so that you enjoy sailing without unnecessary suffering. There is much information about sailing itineraries in many threads right in this message board, under "Chartering", e.g. try "First Greek Charter, looking for hints ...".
As far as kids are concerned, I would be very careful not to scare them off at their first experience with sea-sailing. The Cyclades group of islands is not suited for novices, adults or children alike, any time of the year. On the contrary, I would surely take 10-year old kids on board if they had repeatedly experienced capsize of Optimist dinghies while sailing on a lake a windy day! In any case, watch out that they wear always properly their lifejackets.Greek charter, looking for hints..