¿Cómo se dice "I want to party tonight"? Yo sé que se puede decir "Quiero ir a una fiesta esta noche", pero estoy buscando un verbo que tenga el mismo efecto.
Translating your example, it would end up being something like:
¡Esta noche quiero festejar!
You can also use "Celebrar", which translates to "Celebrate". It depends on the context. For this particular translation, I'd go with "Festejar".
Please note that this answer is not aimed at a particular region, but instead, it's meant to be understood in any region, taking as reference the RAE, and taking into account that the question does not specify any location. As noted in the comments, it may be subject for misunderstandings in some places.