Thanks, Chris, as it sounds like you're already on top of the "please print directions on the coupons and train properties how to handle them" issue.
I'd also like to suggest that Marriott simplify the elite benefits somewhat. As an example, simply provide lounge or breakfast privileges at ALL hotels. No resort exclusions, no weekend limitations, no full-service only silliness. Just state that golds and platinums will get access to the lounge or complimentary breakfast at any hotel anytime.
Yes, Marriott may lose a little money in terms of objective, line-item accounting. But think of the gain in efficiency without having to track all the exceptions and limitations, not to mention to boon to goodwill from your most valued guests.