Your experiences at the Acropolis sent me into a deep depression as I recalled our visits with our then pre-teen son. We waltzed onto the Acropolis at our convenience, often returning after dinner to enjoy its moonlit magic, spur of the moment visits to museums throughout Athens and Crete, Florence's Uffizi and Pitti, a dozen Roman sites including the Vatican museums, all without need much less thought of reservations. And even then, seasoned travelers taunted us with stories of old days when travel was so much easier!