Firstly, most of the Canadian Universities are in the World Ranking, and a lot of them are in 500 + and around 5- 10 of them are in 100 +. In the meantime, most of the Hong Kong employers know or have heard about the famous Canadian Universities, so, it is not a really big problem. Compare to UK and US, UK has some good uni, but not all of them are famous, so, not all employers know. Same case as US, a lot of them are privately own, and there are lots and lots of uni in US, the quality is not sure. The Hong Kong employers only know the top US uni , but not all. Compare to Canada, we only have 78 uni (if I remember) public uni in the whole Canada, and they are mostly competitive and known as good/ excellent research uni.
Secondly, for your specific concern and program, I 'd strongly suggest you to choose the Ontario Universities. This is because 17/ 21 Ontario Universities are in World Ranking, and most of them are old, so, they can offer good program. For more info about your program , please check
http://www.electronicinfo.ca/en/index.php?j=1&flash=1 . This is the official university program search engine/ data base for Ontario High school Students. You will find out what is better for you.
Thirdly, I'd recommend you to go to University of Toronto / University of Ottawa/ Queens University / University of Western Ontario / Ryerson University. They offer good program for Tourism and Hospitality Management. But the above are recommendations only. For University of Toronto, it rank at number 19 in the World on QS University World Ranking 2012. While HKU is 23. Thus, it won't be a problem for you while you were worrying about whether people know it or not.
參考: Personal Experience(Currently studying in University of Toronto)