A reload bonus is an incentive that a casino gives to its players when they reload money on their player accounts. This is a way to encourage players to make subsequent deposits on online casino sites. Casinos anticipate that players who reload their playing accounts regularly are active on site.
Cuba is an emblematic Caribbean country in many ways, and despite difficult political relations with the US, it still attracts curiosity abroad. The communist regime banned all forms of gambling decades ago, and the ban includes online casinos. In practice the ban is not strictly enforced, and some international mobile casinos do accept Cuban players.