This is vague. You do not detail what your members do, what revenue you/they generate, and why they would be interesting to a travel partner. If you are a not-for-profit you must have a compelling value to the travel partner for your membership (since you are selling access). Recall that the NRA was only getting a limited 5% discount off full coach tickets for members going to the national conference from the airline companies. Arguably this is about as high value (set aside the subject matter) and loyal membership in the USA. Further "published rates" are so off the rate card, they are rarely used. I have an AmEx Platinum that gives me a "free companion ticket" every time I book a first-class ticket through their travel desk. First, I do not fly first unless I am upgraded by my carrier, and 2 the cost is usually about 2x what the direct cost is. Giving me a discount on something I would not buy is not a member perk.