Sobey's
207 Queen's Quay W (Inside Queen's Quay Terminal)
+1 416 603-1212
M-Sa 8h-22h, Su 9h-22h
509 & 510 Streetcars to York St
Medium sized supermarket, smaller than Loblaws but much better located. Inside Queen's Quay Terminal shopping centre, with entrance off Queen's Quay. The store has plenty of pre-prepared food and is ideal for making a picnic to eat in one of the small parks on the waterfront.
Loblaws
10 Lower Jarvis St
+1 416 304-0611
M-F 8h-23h, Sa 7h-23h, Su 8h-20h
Bus 6 or 75 to Queen's Quay & Jarvis or 509 & 510 Streetcars to Queen's Quay Station
Very large supermarket, however it is in the undeveloped end of the harbourfront and the walk from the streetcar can be unpleasant. Instead, take the #6 bus down Bay St, which will take you directly to Loblaws.
There are restaurants and cafes scattered along the waterfront, and a couple of supermarkets: