One Night in Toronto

What time do you arrive at Toronto?

Specify downtown on the various hotel on-line searches.
There are plenty of hotels and restaurants near Central Station along Front Street or the nearby streets. A little further north on the TTC subway will take you to the Eaton Centre to shop shop till you drop in what Americans would call a galleria. Plenty of restaurants in that area too. Or ethnic along Dundas west. There are a number of hotels around the airport itself but nothing much else for tourists.

If you only have one night, i would take the train from the airport to union station. The easiest hotel to stay in there is probably the Royal York, as you are right by Union Station. From there you have a few options. You could walk up University Avenue towards the City Hall and then on to Queens park which is the government buildings. There is not a lot of restaurants and shops this way, but it is not a bad walk. You could wander up Yonge street which is lots of shops, very busy.

Personally with teenagers, I'd probably walk along Queen street. You would come to China town, can also go check out Kensington market, and there are some good restaurants along it. If you have long enough you could also try the waterfront area and Centre Island, which is a favourite of ours, very pleasant, but it sounds like you might be getting in a bit late for that

Thanks so much for the feedback! Appreciate it!

There are so many excellent ethnic restaurants in Toronto of every kind - check out the visitor's guide and pick a neighborhood. I've eaten Lebanese, Indian, Greek, and Portugese food that was equally delicious (all were in various residential neighborhoods within Toronto proper, but not smack downtown per se). It would be hard to choose.
https://www.seetorontonow.com

St. Lawrence Market is really fun as well (just check the operating hours first)
http://www.stlawrencemarket.com