Toronto Dinner for group fun with good food
You didn't mention budget considerations, but if you like seafood, especially oysters, Starfish is an option. Good food, fun atmosphere and located within walking distance of other places for drinks if you wish. There are non-seafood items on the menu as well.
So places for consideration:
Buca. Solid Italian at King and Portland. Very cool space, great food and good service. A little loud for some but I've never had a problem.
I like Ame but it has had mixed reviews on the board. Again a very cool space, a good take on contemporary Japanese food, good service and amazing cocktails.
Torito - Spanish style tapas in Kensington Market. Great food, fun atmosphere, good service and in an interesting hood. Probably the most casual of these recommendations.
276 Augusta Ave, Toronto, ON M5T2L9, CA
604 King St. West, Toronto, ON M5V 1M6, CA