Complex sentence: Owner Carlson does not believe in ghosts, but nonetheless offers Halloween package specials at the motel, and the three rooms with the most reports of ghostly activity are popular, and sometimes booked a year in advance.
Split into simpler sentences: Owner Carlson does not believe in ghosts, but nonetheless offers Halloween package specials at the motel. The three rooms with the most reports of ghostly activity are popular, and sometimes are booked a year in advance.