We have stayed in very high end parks where there are dog walking services for stay at the RV dogs. In seasonal parks, dogs obviously get left alone in the RV. It is very dog specific and if your dog is a barker, you are taking a risk of being asked to leave and being a bad neighbor. In years of RVing I don't believe I have ever run across a constant barking dog that was bigger than 10 pounds. The little guys, on the other hand, could make a Fidel Castro speech (he was well known to drone on for hours on end) seem like a short story.
A good way to see if your dog is a barker and causing a problem is to buy a voice activated recorder and leave it turned on in the RV. It will record every time your dog barks.
One other thing, pulling the blinds really won't impact whether or not your dog will bark. You are thinking in human terms. Dogs do not see everything that is happening around them like we do, they smell their way thru life.