[RACooper]

Having gone to Carleton I understand your question... at UofT the school severed it's ties with the greek community around 1960 over an incident involiving allegations (proven) of racism at a sorority and sexual discrimination in the greek community (the fact that they are single sex).

We are allowed to wear our letters (charter of rights).....

Our letters are up on our houses. In your case I would look into the city bylaw that is stopping you from the same, because the school has no say if it doesn't recognize the greek communtiy.

The advertising thing is frowned upon by UofT, but what can they do? after all everyone adverstises at UofT, clubs, bars, films, protests, you name it. In your case since the school can control it, I would suggest going around them so to speeak. Hold a skating event on the canal behind the residences (Lanark), and hold pub nights at the same bar as the clubs (I know a number use to use the Rusty Nail). But the best way to get your foot in the door is to ask permission to advertise a charity event; it stands the best chance of the school saying yes, and getting your name out.