In Cuba the day is celebrated with parades but is not a public holiday. Cubans celebrate on October 10 as their “Dia de la Independencia” to commemorate when in 1868 the fight for independence started with the Ten Years’ War.
I believe Costa Rica has no deserts. Almost all of the interior of Costa Rica is mountains that are blanketed in jungle/forest. Also it has around 7 active volcanoes depending on how you'd define an active volcano, one of the more popular ones is the Poas Volcano which i believe is a national park. As for beaches, Costa Rica is surrounded completely on 2 sides by the Pacific on the West and the Gulf of Mexico on the East.
Estos dulces son para los ninos. I am not sure about the second part. It could be que sacan sus buenas notas.