Why didn’t the women go to the restaurant to have dinner?

M: Darling, do you want to go downstairs to have dinner?
F:  Oh, I’d like to have it in the room. I’m so tired. We’ve been to so many places today.
M: But don’t you enjoy the atmosphere in the restaurant? And we may find the Rogers there.
F:  But you’ve been together for the whole day. No, I think we’ll just stay here and order room service. You may stay here, or you may choose to talk to the Rogers downstairs.
M: Well, how can I let you alone? It’s our honeymoon! We can chat things like difference between men and women while dining.
F:  Sure we have a lot of differences. Like men are likely to dine in the restaurant while women preferred room service.
M: Yes. I mean I am serious. The hotel habits of business travellers have been studied for the third year by the worldwide hotel chain Novotel.
F:  I know Novotel. It has several hotels in China. The Novotel in Beijing is one of the city’s most popular hotels. But why do they do this kind of research?
M: I’m not sure. Maybe to improve the hotel service. But they do find out many interesting results about behaviour of businessmen and businesswomen when they are away from home.
F: Really?