They are full of bars, pubs and discos and get packed on weekend and summer nights. As regards bars, we'd like to mention the custom known as "txikiteo" or "poteo": it consists of drinking small amounts of wine (pote or txikito), beer or cider standing with one's friends and going from one bar to another every little while.
Lo habitual es practicar el "txikiteo" o "poteo", que consiste en beber pequeñas dosis de vino (potes o txikitos), cerveza o sidra de pie con los amigos y cambiando de bar cada poco tiempo.