When you are going to be traveling with someone with Cerebral Palsy, you want to have a plan. Figure out where you are staying. Is the place going to be accessible? Is there going to be enough space in the room to move around? How do they like to get clean? Some people love their baths, while others prefer their showers. Is the bathroom going to be able to accommodate their preferences?
And surely you are not going to sit in the hotel the whole time. So what are you going to do? Are the things you want to do going to be accessible? A lot of places will be.
And you are going to need to eat. Does your person with Cerebral Palsy have special dreary needs? Can you find restaurants that will not be crowded?