We are located at the Sarnia Bay Marina at 97 Seaway Road and are open seasonally from April 1 to Sept 30. Alternate Grounds Dockside affords you the best view in the entire city along with the most original breakfast options you will see this side of the border! We have the BEST and ONLY Water-TOP patio this side of the St. Clair River! Oh, and we’re licensed to serve – alcohol!  We proudly carry Local Craft Beers and Ontario Wines Let's let our images speak for themselves... feel free to have a look around!