This is the other free Shakespeare in the park — this free Shakespeare is in Riverside Park. Members of Hudson Warehouse actor’s collective perform “Comedy of Errors” at 6:30 p.m. Thursday, June 28 through Sunday, July 1st, at the Soldiers’ and Sailors’ Monument at 89th St. on Riverside Drive. No tickets needed — just show up and grab a seat on the stone steps. Good idea to bring a pillow or something similar. Event website. This is the last weekend of performances.