Graham, unless you have a suite, the room service breakfast is normally pretty awful, iirc. Just a few pastries and no hot drinks.
Our preferred option ( well, actually Mrs W's instructions ) is that she makes the tea, whilst I go to the buffet and return with a full collation of pastries, meats, cheese, ham etc. I normally have to go twice as I will have forgotten something obvious, such as tomatoes to go with the cheese !