HAPPENIN’ OTSEGO for MONDAY, OCTOBER 31 Happy Halloween! ONEONTA PARADE – 5 p.m. Bring the kids in their scariest, prettiest, or even weirdest costumes for the Oneonta Parade. Parade begins at 6 p.m. Line up is at 5 p.m. on Elm Street, Oneonta. Visit destinationoneonta.com COOPERSTOWN PARADE – 5 p.m. The gremlins, ghouls, fairies, and ghosties and everything in between take over the town for a fun parade down Main Street, Cooperstown.…