I would not expect to walk up to Boma without an ADR in the mornings and get to eat breakfast there. It's possible, but doubtful. It is a pretty popular restaurant. If you don't make ADR's there, you most likely will be eating at the counter service for breakfast (which we thought was fine). I would suggest that you make one TS ADR a day to be safe (and if you want Boma every morning pre-park make ADRs for that). You can always cancel your TS reservations even the day of, if you change your plans; want to do something else, or find someplace better to eat. It is better to have some as a back up, than to not have anything at all. If you don't have ADRs, you will be able to eat, but especially with it being a free dining time, you may be limited to counter service. We were NOT impressed with most of the counter service in the parks (Epcot world showcase excepted). I sure wouldn't want to eat it for every meal for a week.