If you spend the night with Mari on exactly the same night that the Kendra waterskiing sequence is triggered on the following morning, you will go to sleep in Mari's bed at her place and be woken up in your own bed by Kendra's call.
had something similar: when Mari calls at night to help her with the sheep the next morning is him with the borrowed overalls on the farm. But somehow a phone call (in my case a visit to Whitney's lab) magically clean his original clothes.