I am working on a design for a high-end residence that has a similar situation. There is a "main building" that has a kitchen, bedroom, bathroom, and the rest of the stuff that comprises a dwelling unit. There is a guest area with two bedrooms and a shared bathroom. It has a roof in common with the main building, so I am not treating it as a separate structure (i.e., I am not limited to feeding it with a single circuit). There is an identical but separate guest area that does not share the same roof. There is also a separate master bedroom suite that does not share the same roof. Neither of these two buildings has a kitchen. So I am treating them as accessory buildings - that is, neither is a dwelling unit, so I don't have to apply the 12 foot spacing rule for wall receptacles, and I don't have to apply the AFCI rules either.
Now more to the point, there is a separate outdoor cooking area near the pool. It has its own roof. It will have a permanent grill and a sink. But it will not have a bathroom or a sleeping area. So I am not calling it a dwelling unit either. You have to walk out of the dwelling unit to get to the outdoor cooking area. So I am not planning to call any circuit that feeds that area a "small appliance branch circuit." I can use only 15 amp circuits if I wish, but I probably won't. I can share the circuit feeding a countertop receptacle with the light over the countertop if I wish. I don't yet have the lighting designer's drawings, so I don't know how I will end up handling those circuits. I will provide a separate panel in the area, and so I will have only a single feeder supplying this building, in compliance with NEC 225.30 (2008 edition - this project is in Hawaii).