I can't speak for other villa owners, but when we take a booking before the flights are available ie more than 11 months in advance, we do try to be a little flexible on the dates - as long as we don't have a second booking too close to the one in question. In other words we would change the booking a few days one way or the other at no extra charge, if the villa is still available for the new dates. We find this helps us know we have a booking and the guests know they have got a villa they like but can get the best value flight as soon as they become available.
Sue
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