For some dogs, it gets easier after a few times. Well, Coffee tends to be slower to settle in, especially for his first day. Yes, even though he's stayed with us a few times, he will wait by the door and keep a lookout for his owners. When it's really quiet, you can barely hear him let out a single whine.
But with a good night's rest, the next day is always a better day. He reverts back to his cheerful self, like what you see here! :)