FFFFFFFourth of July.
Patriotic Holiday.
Each F might reflect a patriotic statement.
Positive words that start with F, or just the word FOR preceding the next word, as in: For Freedom, For Liberty, For America, Etc.
Another idea now that my almonds are tingling:
There are seven instances of that letter for Fourth of July.
Four score and seven years ago
https://en.wikipedia.org/wiki/Gettysburg_Address