This means good luck in spanish. The native language of Costa Rica is spanish, but a large percentage of the population speaks english as well. In expat towns such as Tamarindo you can manage with english alone. It is still fun to learn a few phrases in spanish to use while in Costa Rica. Tamarindo has 2 spanish language schools as well.
![Buena Suerte](http://www.costaricaphotographer.net/wp-content/uploads/2014/09/0763-740x444.jpg)