Tiki-philes can take their festivities to the next level via a waterslide-equipped Polynesian party barge out of Monroe Harbor. Seafaring groups of up to 36 people (and even their pooches) can cruise Lake Michigan and the river on one of eight vessels in the fleet, including the 50-foot Big Kahuna or smaller Polynesian. Once you’ve downed a few fruity margaritas, continue the party at their new Tiki hut on the Chicago Riverwalk, where they have a full bar and live music on Saturdays, not to mention the "Kahuna Burger" with fresh pineapple chutney.