General synonyms:
* Celebrate: To mark a special occasion with festivities.
* Feast: To eat and drink copiously and enjoyably.
* Carouse: To engage in boisterous revelry, often with drinking.
* Frollic: To play and have fun in a carefree way.
* Enjoy: To experience pleasure or satisfaction.
* Indulge: To allow oneself to enjoy something, often to excess.
* Savor: To take pleasure in something slowly and fully.
* Delight: To give great pleasure or happiness.
More formal synonyms:
* Rejoice: To feel or show great joy.
* Exult: To feel or show triumphant joy.
* Celebrate: To mark a special occasion with festivities.
* Commemorate: To remember and honor a person or event.
More specific synonyms:
* Party: A social gathering, often with food, drink, and music.
* Binge: To eat, drink, or indulge in something excessively.
* Rave: To dance and party enthusiastically, often with loud music.
* Boisterous: Noisy and lively.
The best word to use will depend on the specific context of your writing.