Review for Plainridge Park Casino Review For Slack's Oyster House & Grill Google User May 28 '18 at 3:34 We felt comfortable at the Plainridge Park Casino the moment we walked in. Its kind of confusing when driving there for the first couple of times. Not a big deal. Should you want something quick to eat, have a slice of barbecued chicken with bacon. Sweet! View full site to comment or like