the conference ended with a spate of propaganda speeches by several high-ranking cubans on a saturday afternoon and as ray and i made our way back to our rooms to prepare for the evening -- carlos had suggested a farewell celebration at what he called the last vestige of profitable colonialism in havana , the copacabana nightclub , adding that it was allowed to remain open only because its profits now were used to support the revolution -- we talked about the weeks experiences and our departures the next day .