Almost never. Our schedule is fixed for each season as soon as it is announced. You can plan your vacation with us knowing that the dates you choose are solid. We may, however, add NEW tours from time to time. We have never had to cancel a tour. If, for some reason, we must do so in the future due to a fault of our own the full deposit would be refunded and airline tickets reimbursed (the latter will be refunded unless you have travel insurance which compensates you). It is emphasized that the probability of your tour being cancelled is miniscule and if it is a possibility, you will be notified very early on to allow maximum time to make a change in plans. We are very excited that our tours are so popular and this means that we almost certainly have sufficient demand to fill each and every tour offered.