Sounds like you got an excuse from the hotel, not an accurate answer. It's the alternative some service-challenged customer service folks use to avoid, "I'm sorry."

By the way, some Renaissance (and maybe Marriott) properties provide breakfast coupons (or breakfast credits) as an allowance to whatever breakfast items you choose from the menu or towards a buffet. For example, the Renaissance Vinoy (a resort with no lounge) provides a $20 breakfast credit (everyday) to platinums (but not to golds), and the Renaissance International Plaza in Tampa (a non-resort with a lounge closed on weekends) provides (at least a few years ago when I stayed there) an allowance towards breakfast in its restaurant on weekends.

Which Renaissance were you at?