I was able to get my luggage tags and the loops for them, and the badge card holders and lanyards all from the same company. (Not sure if they ship to Canada or not, though!) I spent just over $100 for 100 of each of the above, and, since it was over $100, I got free shipping. (I had about 60 guests, so this wasn't too much of a stretch.)
Just wanted to throw this out as another option for those considering luggage tags as well as keycard holders - it was really tough for me to find less expensive luggage tags, and these were about the best price I could find for hard plastic tags.
http://www.bestdesti...ags-on-a-budget (<-- for specifics on what I purchased.)
And, if anyone is interested, I still have about 30 lanyards and keycard holders leftover (black lanyards, clear keycard holders) that I'd be willing to sell, just shoot me a PM. (Sorry, I promise I'm not trying to turn this into a classified ad!)