We have never stayed there, Sunset RV Park looks pretty good. Our personal preference is Brennan Beach on Rt 3 in Pulaski or Cherry Grove in Wolcott, NY.. Sunset would be much more convenient for Harbor Fest but may be booked already. The fest is a very big deal there. Cherry Grove is about 20 or so miles from there to the west on rt 104. Brennan is probably 30 minutes northeast on rt 3. Cherry Grove is a nice quiet campground, not overly large. Brennan Beach has about 1900 sites with about 1000 seasonals, 2000 feet of sand beach, three pools, a courtyard with store, ice cream stand, rec hall. Many planned exercise activities including water aerobics, group walks, stretching etc. I believe all, or most, sites are full hook ups including cable TV. We really like the Beach Elite sites for the easy access to the beach. We have been going there the last week in July for about 20 years. However, it is a longer ride to Oswego. While you are in the neighborhood, you may want to check out the Renaissance Festival in Sterling, NY. Sterling is between Wolcott and Oswego. Have fun.
Sterling Renaissance Festival