I'm planning my family trip to Greece for summer of 2023. We are 2 families. I'm working on the itinerary as we will be in Greece for a total of 7 days. We are planning Mykonos and Santorini. Is this doable and need some itinerary help with 5 kids ranging between 11-3. Is 7 days too many days? We are traveling from the US so I didn't include travel days with the total amount of time we will be in the islands.
Also this is our first trip to Europe with the kids. Needs some advice on what to pack?