You don't always have to go out for lunch. Make sandwiches from supermarket ingredients. Buy a short serated knife (life the victorinox) with the round tip. You can cut bread, meat, veg AND you can butter said bread with it. Best freaken travel accessory! Make epic sandwiches in your hotel room and save money when you're out during the day. We did this in Spain and Portugal and saved a tonne. Free hotel breakfast, cheap super market lunch, "fancy" restaurant dinner. I mean, come on!