We understand your concerns here. We will try our best to accomodate your request. Contact us at firstname.lastname@example.org with your request. If the new date is available, we would be happy to update your reservation. At the same time, Please note that some venues/local suppliers cannot accept cancellations or date/time changes if tours are immidiately confirmed through system. There could be penalty chareges for cancellation of confirmed booking. Any non-standard refund or cancellation policies from the tour operator are stated on the tour page.