At my previous job as a soap maker, an instance occurred where a customer came in and she traveled a lot for work and she had a small card for a free soap for a year. She told me, well I'm only ever at home a few times out of the year, may I please use my free soap for next month as I will be out of the country. And I went ahead and allowed it as she wouldn't be in the country to get the free soap for that month.