When tourists enter Mexico, visa free (for example, Canadians), they are ordinarily given an entry permit (FMM) good for 180 days. Just occasionally, it seems, the immigration officer notes some other amount of time, as happened to someone I know, recently. This person flew in on a return ticket with a departure date 178 days from the date of arrival; however, for reasons unknown the immigration officer wrote "14" in the blank for the days of authorized stay. She didn't notice this until much later (but well within the 180 days normally given) and now is alarmed about losing the value of her trip by having to return ahead of time. Anybody had this happen to them? With what result?