At Alternate Grounds Dockside, the water gets a vote before the menu does. The restaurant sits on the Sarnia Bay marina, a Canadian restaurant and bar set up so the patio and the boat basin are part of the meal instead of a view glanced at between courses — the kind of place a table picks for the setting first and sorts out the order second. When the order comes, it is built wide to match the draw: weekend brunch, tacos, seafood, pasta, wings and comfort-food mains, all kept at the easy register of a Bay-side afternoon, where lunch and dinner blur into one unhurried sitting.
Seafood is the menu's strongest thread, and the Lobster Roll is its clearest expression — creamy lobster heaped on a garlic-butter grilled hoagie with a little greenery and a spoon of pico, the dish that bridges the marina and the kitchen in one handheld. It runs deeper than the roll. Lobster Mac and Cheese, Fish Tacos, Crab Cakes and a straight-ahead Fish and Fries give the dockside theme real weight. Around it sits a taco section that does most of the menu's wandering — Hot Honey Shrimp, Carne Asada, Jerk Chicken — next to handhelds like the Crispy Gochujang Chicken, fried chicken lacquered in honey gochujang with house-made kimchi, cucumber and sriracha mayo. The casual side fills out fast from there: the Buffalo, a Reuben, Jumbo Wings, a Caribbean Cobb and a Picking Platter built for sharing. And the kitchen still lists the wanderers — Pad Thai, Florentine Mac and Cheese, Falafel and General Tsao Cauliflower — so a table of mixed appetites rarely runs short on routes.
What the menu says about the kitchen is that it refuses to be only one thing. A narrower place would plant its flag in seafood and stop; Dockside threads Caribbean and Korean accents — jerk, mango salsa, gochujang, kimchi — through plates that still read as familiar weeknight food. That breadth is a deliberate kind of useful. A table that can't agree finds its plates here: one person orders the Lobster Roll for the water, another splits tacos before the pasta course, a third treats the Crispy Gochujang Chicken as the sharp counterweight to a Buffalo sandwich. The accents never tip into fusion for its own sake; they sit on plates a regular already trusts, and none of them asks the diner to settle on a single cuisine for the night. The range is the identity, not a hedge against it.
Weekends are where Dockside gets most specific. The brunch menu turns out Jerk Chicken Huevos — refried beans, over-easy eggs, mango salsa, guacamole and citrus crema stacked on crisp corn tortillas — alongside a Lobster Latke Benny, a Potato Latke Benny, Huevos Rancheros and Chicken and Waffles, a morning lineup that earns a drive rather than a default. Saturday and Sunday bring live music to the marina in the afternoons, though it reads as a timing cue worth a call ahead rather than a fixed feature. The early-to-evening hours, seven days a week, suit a place built for the unhurried Bay-side outing more than the late shift, and groups get an easy time of it between shareable wings, flatbreads and tacos made for splitting. There is no online booking to work through; a phone call or a walk-up is how the patio fills.
A seafood-only restaurant farther down the water would be easier to sum up in a sentence. Dockside trades that for reach — the patio a group lands on, the brunch worth the weekend, the casual dinner that still puts lobster on the table, all on the same stretch of Sarnia Bay marina. The simplest version of the visit is the right one: a Lobster Roll, a few tacos to split, weekend brunch if the timing lands, and a seat at the rail where the boats come and go.