“If a household contains two adults - one with a medical license and one without, what laws apply to this household? For example, in terms of the number of plants per household, does the "medical use act" trump the "recreational use act"?”

Unfortunately, that question goes a bit beyond what we would feel comfortable providing an answer. The best direction we can give is to refer to the Acts themselves - we have links to the recreational specific acts on our Good Information page. If you still have particular questions regarding how the Acts intertwine, it would be best for you to consult legal counsel.