We are having a reception on October 20, 2018 on the Toronto harbor. Details are as follows:
If travelling by public transit, the nearest subway station is Union Station, from which you can take the 509/510 streetcar towards Spadina Station to Queens Quay West at Rees Street. Alternatively, it is about a 1km walk from Union Station to the boat. A Google Map may be found here.
If driving, then there is a large parking garage at Queen's Quay Terminal at 207 Queen's Quay West. Other parking locations are noted in this PDF.