Not all MAR hotels have gone to the 'fresh bites' program (yes, there's a thread re: it way before SPG came into the pic & MAR FTers not happy w/ it either). Having said that, there are a lot of MAR hotels that still offer true room service. The OP got unlucky.

For the record OP - please post which property you encountered this at, so others will know what to expect.

Cheers.