Depending what part of spain you will visit, but for the beach locations; – Wear something on your feet upon walking on what looks like sand. It’s 9 out of 10 times a man made beach with tiny pebbles that get blistering hot. - Drink your soda (from the bottle) without the ice. Its regular tap water and not healthy. You can actually smell the Chlorine dioxide in the water. - A lot of shops sell software/games that look to good to be trough.They are. Often DS games like 40 on one cartridge, contain like 5 bad games, named diffrently to make a list of 40 games - Don’t mess with the Guardia Civil. It’s Spain’s military police force. They are on the streets a lot, and can use their weapon-stick at any given moment. Beat you to pulp first, lock you up later… - Shop owners are really friendly, but don’t try to get your money back after a bad purchase . They forgot how to talk English instantaneously, or try to convince you are in the wrong shop - Although the deck chairs on the beach look comfortable, I won’t recommend them. you pay quite a lot, and at night when they are stacked up high they are the sure spot for people with a blather/alcohol problem. - ETA. well they promised a ceasefire, but you never know. - Bring cash. Banks open and close at the weirdest times without any logical explanation. ATM machines are almost like slotmachines, you never know what you gonna get.