I grew up in a place that is highly politicized, where the choice of holiday to celebrate in July said a lot about one's position regarding Puerto Rico's political status and its relationship with the US.
You see, there's July 4th, known on the island as "U.S. Independence Day." And then there is July 25th. Also known as "Constitution Day", it commemorates the day in 1952 when the Constitution of the Commonwealth was signed. Both are official holidays. Everybody has the day off, and there are official government and political party events to either celebrate or protest.
The three main ideologies on the island are: pro-statehood, pro-commonwealth and pro-independence. The pro-statehood sympathizers privilege July 4th above July 25th. The pro-commonwealth group makes a really big deal about celebrating the 25th. The pro-independence contingent rejects both and protests US presence in Puerto Rico on those dates. Especially anathema to them is July 25th, for the date (not coincidentally) is also the anniversary of the invasion of Puerto Rico by US troops in 1898 as part of the Spanish-American war.
Add to the pot two other local holidays during the month, celebrating the birth of two famous historical figures (one of whom is identified with the pro-commonwealth cause, and another with the pro-statehood ideal) and it makes for one politically hyper charged month.
However, all that I remember now is the joy of being free from school or work on those days, and the ability to go to the beach and/or goof off. And I think most ordinary folks on the island just love their holidays and will take any days off they are given, regardless of where their political sympathies lie.