I just checked in to the hotel. Sad to say no free breakfast for Titanium member - didn’t even get the $10 credit x 2 you get at Courtyards and AC Hotels. (So a gap in Bonvoy’s breakfast offerings for elites). You can add to the Fairfield Busan to the list of Fairfields that don’t offer breakfast (like the Fairfield in Seoul). Was told it’s an Asia thing. Was offered a discounted rate for breakfast of 11,000 KRW.

I’ll post some more later but wanted to share this data point for those interested in Fairfields in Asia. Just updated the wiki for “Marriott’s Breakfast offerings”