I love the saving table arguments... but anyway, was reminded of them today. I sat in a corner of Ponti's and watched the world go by. You can actually take a "Reserved" sign and put it on the table of your choice before you go and place your order. In fact, you have to because they need the table number. How civilised. You know that when you get your drink and order your food and pay for it, you'll have somewhere to sit and eat it. (I did wonder if sometimes the signs get moved and exciting Reserved Rage incidents occur).
I also watched as people came in weighed down with shopping and handed it to their mate, who would then very sensibly go and sit at a table (often with a big sigh) and wait for their unburdened friend to bring over the tray of drinks. Very sensible. Or maybe they parked an aged parent at the table and then went to sort the orders. It all seemed very reasonable to me.
Mind you... I chose a table away in the far corner because I had stopped to ease a cracking headache for a short while. The cafe was quiet, there were plenty of empty tables nearer the counter... so why did the lady who entered the cafe with the baby that was screeching in an ear-splitting fashion have to come and sit at the table RIGHT BESIDE me, and even put the high chair back to back with mine?? And then when I moved - how dare she give me evil stares? Was she a MNetter I wonder? 
Anyway - I think it's fine to save a table. So there.