I thought it was caffe latte that you aren't supposed to order past noon. I recall all kinds of folks having a cappuccino in the afternoon at the Campo die Fiori bars. Maybe my recollection might be fuzzy, as that was back in the mid 1990s, and I haven't been back since. BTW, I just discovered your site and have been enjoying it immensely. I will be finally returning to Rome in April, so your recommendations and advice have been a godsend. Keep it up! I hope to continue reading your blog posts. Ciao, Bella!