Hawaiians do. They are Americans.

1) "Admission Day or Statehood Day is a legal holiday in the state of Hawai`i in the United States. It is celebrated annually on the third Friday in August to commemorate the anniversary of the 1959 admission of Hawai'i into the Union. Statehood bills for Hawai'i were introduced into the U.S. Congress as early as 1919 by the non-voting delegates Hawai'i sent to the U.S. Congress. Additional bills were introduced in 1935, 1947 and 1950. In 1959, the U.S. Congress approved the statehood bill. This was followed by a referendum in which Hawai'i residents voted overwhelmingly in support of statehood (the ballot question was: "Shall Hawaii immediately be admitted into the Union as a state?"), and on August 21, 1959 (the third Friday in August), President Dwight D. Eisenhower signed a proclamation making Hawai'i the 50th state." Source and further information: http://en.wikipedia.org/wiki/Hawaii_Admission_Day 2) "Besides recognizing U.S. national holidays (besides Columbus Day), Hawaii also observes three unique state holidays. These days are Prince Jonah Kuhio Kalanianaole Day, King Kamehameha I Day and Admissions Day. On these observed holidays, most banks and state agencies are closed. Because Hawaii is such a melting pot of cultures, there are a handful of other holidays that are celebrated “unofficially” by residents of Hawaii. The most popular of these holidays are: May Day or “Lei Day,” Boy’s Day, Girl’s Day and Chinese New Year." Source and further information: http://www.to-hawaii.com/hawaiian-holidays.php

I wasn't aware there were any.

Of course not! But, now, ask if the Hawaiians celebrate any American holidays

If their associated with an fast food chain

Yes...since all those who live in Hawaii and celebrate Hawaiian holidays are Americans!