Thank you for the input.
it is frustrating that you cannot get a definitive answer from Celebrity on what they are doing. I moved the start of our tour back to 10am to give us more leeway depending on where they put us ashore.
We are arriving in Mykonos at 7am on a Celebrity cruise. Can we safely make a 9am excursion not booked through Celebrity? I understand Celebrity excursions get priority on tenders.