The "Right to Party" as defined by the organization known as "The Beastie Boys" is not defined in any portion of their discourse on the matter of the "Right to Party". Rather, the entire discourse poetically describes a youth, presumably under the legal adult age of 18 (given restrictions on smoking cigarettes and owning adult literature in the second verse), who faces restrictions upon his or her rights by his legal guardians, in this case a mother, father, and teacher.
Whereas the dictionary definition of the verb form of "Party" is defined by Oxford Dictionary as "Enjoying oneself at a party or other lively gathering, typically with drinking and music." As established, the subject of the proposed treaty on this right is legally barred from drinking, though a party may exist without alcohol and thus would not prevent the subject from engaging in an act of partying.
A party or lively gathering would meat the definition of "Freedom of Peaceful Assembly" under the First Amendment Rights of the United States Constitution as well as "Freedom of Association" under the same amendment. Said party may additionally be for any purpose so long as it is peaceful.
The state may impose reasonable restrictions on the party, such as noise ordinances, age based restrictions on minors including "Adult Contents", cigarettes and alchohol, as discussed. While typcial, they're absence does not prevent the assembly from rising to the level of "party" as previous defined.
Beastie Boys contends that the restrictions place upon the subject of their discourse on the Right to Party is unreasonably restricted by the confiscation of several items, enforced school requirements, and dress code as defined by the legal guardian in their right as authority of the youth's rights. Beastie Boys offers little evidence that these restrictions are unreasonable or prevent the subject from "partying" as defined above. Beastie Boys do propose that the authority known as the father can not restrict the use of cigarettes by the youth as the father "smokes two packs a day". While Beastie Boys is correct that this meets the definition of hypocritical, the father is assumed to be of legal age to purchase cigarettes and is legal allowed to restrict access to them based on reasonable age restrictions and possible heath risks the father wishes to prevent in the youth that he may or may not be suffering from. As there are no formal requirements for a peaceful assembly to rise to the level of party, it can be presumed that these restrictions would not affect the party as defined. It should also be noted that in the Beastie Boys discourse, that the authority figure referred to as mother did not restrict the youths ability to listen to the content of the discourse, nor were any restrictions described tailored in such a fashion as to restrict the discourse specifically.
While there is no amendment defining the right to party in the United States Constitution, the 9th Amendment does clearly state that citizens rights are not enumerated in the constitution and other rights not discussed in the constitution may exists and be claimed by the individual.
From an originalist standpoint, it is widely accept that a good number of The Framers of the Constitution quite frequently met the accepted definition of the phrase "Drunk off their Ass" and thus, would not reasonably be against what can be defined as a "party". Additionally, many were participants in an event that was known as the "Tea Party", which was agreed by many to be quite the lively gathering at its time and was still viewed as quite the "radical" affair of the day, many wearing costumes such as those who attended in clothing traditional of Native Americans. They were also most likely not drunk during the course of this party. Thus, the intent of the framers was never to restrict or deniegn such a right
Thus, a reasonable court in the United States would hold that the Right to Party does exist for all U.S. citizens and is inalienable.
Beastie Boys also argues that it is acceptable to fight for one's right to party. This does not conflict with the First Amendment Right to petition government for grievances so long as it is again a peaceable affair. Given the poetic nature of the discourse, we can presume that "Fight" would mean to defend or struggle in a non-violent manor for such a right. This is backed up through originalism as the restrictions placed on many citizens of Boston for their actions during the Tea Party were subsequently fought against for many years, culminating in the Constitution.
Thus, it can be assumed that the United States does recognize the right of the people to party and the right of the people to fight for the aforementioned right. This right would still be subject to reasonable time, manner, and place restrictions so long as said restrictions are content neutral to the message of the party.