Complex sentence: During the Tiki culture fad of the 1950s and 1960s, as many as 25 Trader Vic's restaurants were in operation around the world, all featuring the popular mix of Polynesian artifacts, unique cocktails, and exotic cuisine.
Split into simpler sentences: During the Tiki culture fad of the 1950s and 1960s, as many as 25 Trader Vic's restaurants were operated worldwide. They all featured the popular mix of Polynesian artifacts, unique cocktails, and exotic cuisine.