In this particular situation (two people, each occupying their own room), if there is a problem with breakfast and/or lounge access at a particular hotel, the thing to do is to add the other guest as a second guest to your room (in addition to their own room of course). In most hotels, there's no difference in cost for a room between it having 1 or 2 occupants, and once they're registered to your room, there's no question that they get lounge access and breakfast.