When I first started backpacking, blisters from boots that didn't fit me right ended a planned 6 day scouting trip after a single night. My broken leg on Kodiak ended that trip in a hurry, though Luke and our partner still had to stay two nights after I was whisked away to pack out meat and gear. Luke and a buddy came out a few days early by water taxi from a goat hunt last year after being battered by storms for days, and the forecast was calling for a one day break in the weather before another storm system rolled in. Sat phone ends up being pretty essential in coordinating changes of plans with air and water taxi, as well as folks at home.
There are probably others, but nothing drastic that comes to mind. Many times our trip plans are somewhat flexible, and so we don't always decide how long we are staying until we get out there. When hunting we typically plan to stay until we punch our tag(s), the season closes, or one of us has to go back to work. For other scouting or backpack trips, we will sometimes cut them short if the weather or visibility is terrible, and similarly extend them (food permitting) when it's gorgeous and we are having a good time. I am trying to get better about leaving a trip plan with one or both sets of our parents when we leave, and so when our plans change a quick sat phone call is usually in order to keep them apprised of the change.