Went through years of someone having to stay home each trip because our dog was traumatized, sick and upset at kennels (I still would not have brought her to Disney). Then I found a pet resort that she not only loves but runs out of the car on arrival. She never liked other dogs so she had her own suite, she got private swim lessons (bone shaped pool
), private trail walks, private playground time, ice cream, spa treatments. But now that we have a second dog, her best buddy, and DD added a dog, I think she could join in the group play.
I know the worse of kenneling and the very best. When you find a good place, even the most introverted non-social dogs can have a great time and like you say, their own vacation.