The difference between A dog and an elderly or infirmed dog is huge. In 2010 our last remaining dog died just before a planned vacation. We decided to do something special and different (went to Disney World). While we always enjoy RVing, and enjoyed this trip we adopted a rescue about a month after we got home. Now we travel with two.
I think Wildtoad said it well
We don't make plans based on the animals, but do make accommodations.
They do add to our enjoyment, stimulate more activity and require very little in return for what they provide us.