I have been staying at River Beach Campground in Milford, PA for many years. They are right on the river and there is good smallmouth fishing right in front of the campground. We generally float the river with rafts and kayaks from Port Jervis, NY down to the campsite. They have river front sites there, but they require that you use thier rafts/kayaks if you want those premium sites. It is a nice clean campground.
Other options are up on the NY side. Cedar Rapids campground in Barryville, NY is decent. It has a bar/restuarant on the site. Great water to float and fish from the Ten Mile river access down to the campground. It is loaded with smallmouth in that section. The only problem with that campground is that it gets a lot of partiers that stay up very late. That may be what you are looking for though.
PA licenses are valid in this section of NY because it still borders PA on the west.