SANTA CLARA, Cuba — Serious, standing upright and dressed in long gala dresses — despite the midday Cuban heat — Lisset and Liusba quietly walk up the ten steps of the notary office, their hands clenched and shaking. Less than a few feet ahead walk their two young daughters. Nearly an hour later, when they walked out of the doors, the tension on their faces was replaced by smiles. From that moment, they were wives.