Oh dear, when I read this I realize that I have had a miserable life so far without all of this- We are two and often have visitors, and 2x1 is really comfortable. Permanently having six people also works well. For visitors, we used to have an extendable/attachable option with the family that was actually never ever used (but paid for expensively). Nearly everyone today builds themselves a counter with seating options, large children's rooms with chairs+tables for "emergency use" etc., all of which can be wonderfully designed. Visitors come occasionally, but I would never restrict our daily habits for that, even though my visitors are important to me. I have garden chairs, garden table, chipboard with tablecloth etc., I once had a whopping 90! people in the house (120 sqm with huge terrace) but no one said anything about a too small table. Of course I can present situations where something is always missing, pan too small, terrace too short, chairs too few, car too small, sunshade too small. But if I really wanted to proactively compensate for these few cases, then my house or basement would be filled with stuff 95% of the year that I would only rarely need. Then I should also build with 250-300 sqm living space, as I can imagine equally realistic situations where one would need that for 5% of the time, plus XXL grill in outdoor kitchen for big parties etc. Maybe it is because we also decided to manage better with less (wisdom of age). I find a table 3m long or longer absolutely chic or a great huge sofa, I like sitting there alone but then the room and the whole house would have to fit this size, otherwise it seems strange to me. Therefore, I agree with the idea of of the extendable table, because it should not stand there like a monster in a cramped room.