Indulging your appetite is tempting at the week's outset, but frequent light meals and plenty of water will keep you going much better than a heavy, fancy dinner and drinks. You could fall into a philosophical discussion on wednesday or thursday, and new viewpoints are one of your favorite aspects of travel. It definitely gives you something to mull over during downtime on your trip: write about it in your journal to hold onto the interesting ideas. If you're traveling with a companion, you may have different energy levels this weekend; split up so one can nap while the other keeps exploring.