I've booked the whole trip in norway with a credit card which is gonna be expired soon, but no problem, as the number stays and the card is being charged for the next three months after expire either. Don't mention the need to pay here by checking in. Here's a reply from one booking website, for example: Its highly unlikely if you have a confirm number that the hotels would cancel the reservations due to an expired card. So, bad customer service here as they threatened me to provide a new card the next days on telephone otherwise they'd cancel the booking. So canceled the booking by myself.
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