If you have a good map of the area, there is no reason why you can't just wander around by yourself seeing all the tourist sights and the ordinary people in between. You will walk like you have never walked before, so get used to it and make it a part of your sightseeing. If you can't walk very far, maybe you need better shoes. If you are footloose and fancy-free, you can walk around all day and not even worry that you didn't get to any of the major tourist spots. There are really very few countries in the world where you cannot walk just about anywhere and everywhere in the daytime, and most places after dark.
Some people seem to spend half their day looking for a good place to eat lunch.
In the city, there will be plenty of passable eateries, but in the countryside you can spend an hour going out of your way to find a cafe where you don't like the food. So eat a good breakfast and take along some biscuits and fruit to keep you going. Or lay in a supply of your favorite street food or a hard-boiled egg before leaving the town. You can often get some coffee or a Coke to fortify you until dinner time. I repeat, eat a good breakfast that will keep you going, then just don't think about food unless it presents itself.