Ability to speak French will definitely help you

The official languages of Haiti are French, Creole, and Haitian. While both French and Haitian Creole are official languages in the nation, French is only spoken by a small fraction of the population (most sources estimate between 5 percent and 10 percent of Haitians speak French fluently and use it regularly in their day-to-day lives). Nonetheless, the language retains a strong grip on the country—for example, most Haitian primary school pupils are educated in French, despite the fact that the great majority of instructors and students speak the language with limited fluency. When Haiti obtained independence from France, the majority of the elite survivors of the Haitian Revolution spoke French; as a result, legislation was done entirely in French, despite the fact that the whole country spoke Haitian Creole as its native language.

Although French is closely connected with the country's elite, many of the country's wealthiest residents use Haitian Creole as their first language. Historically, many of the country's elites saw Haitian Creole as a misspoken, error-ridden version of French (despite much of the language's lexicon is derived from French, while the syntax is notably different). It wasn't until 1987 that Haitian Creole was legally acknowledged alongside French, rather than as a bastardized variant of French.