Complex sentence: Taquileans have lost control of transportation to and from their island, and although they still benefit by selling textiles and providing meals, they have almost no control over the mass day tourism operated by non-Taquileans.
Split into simpler sentences: Taquileans have lost control of transportation to and from their island. Although they still benefit by selling textiles and providing meals, they have almost no control over the mass day-tourism operated by non-Taquileans.