besides virtuoso also brand agency programs such as four seasons preferred partners which specifically includes room service as well
also amex plat FHR
good buffets offer multiple cooking stations
sometimes high prices makes high credits still not great
actually seem to recall report of firmdale crosby street hotel NY not charging anything for breakfast
some properties publish breakfast as included in rates (all rates, not 'bed and breakfast' rates) mostly independent and or not big chains for upscale
chains sometimes cost more than independent luxury properties