@Nigel57 the alteration request is a tool you yourself can use , to extend a guests stay or shorten it if you wish or need to , as determined between you and the gust so learn the regulations and use it to your benefit . it is a request only . Some guests disregard your cancellation policy or double book and cherry pick. they fail to realise that we are not hotels and even though we have extra rooms they are not rented separately , nor do we have multiple properties, mostly . some hosts do , of course and may be able to accomodate people more easily , but if you are already booked on either end of the stay then it is not changeable , and you simply need to politely tell the guest so . That is hosting .If it is not an issue for you , then you can send an alteration , but be careful , never send a refund , ever . Let the alteration do that . there is a scam at the moment and maybe you are being targeted . some people are just trying to get money back for reasons of their own . just go on your merry way . If you want to keep your strict policy then just remind the guest when you message that cancellations may attract fees. but these are not generally cancellations but adding and extra day or turning up a day later .I guess it is designed to get around cancellation fees . I use a flexible policy so realistically people can cancel up to the day before and that is usually when people will ask to change days . all the best . you can do this . at least you have bookings . Lucky you H