I want to switch bedrooms BUT parents...?

Let me start by saying 15/M almost 16.

Okay so we have a "bar" in the house literally its just a wooden L shaped bar with a shelf in the back that my parents keep booze on, and it has 2 closets and it s almost x2 the size of my bedroom...

Now you think that s your parents space to drink and have fun, YOU WOULD THINK, except; It s a storage as of right now with boxes all around the walls...

They RARELY use it like once a year maybe besides storage, and I was thinking I WOULD LOVE to have it as a bedroom, and just move everything in there to my upstairs bedroom.

One problem; parents.

Mine are the type who if it doesn t interest them in any way they say NO. And honestly I know my mom would let me but my dad would try EVERYTHING in his power to stop me... I am a strong guy 6 1, 180lb so I could make the switch on my own but the thing is they d be really angry and make me put it all back, so I was wondering is there any good ways to convince parents?

And my room has a cabinet built into the wall so they could keep their alcohol in there if they wanted to.

And I am a responsible teen I m not into the drugs/sex/drinking except I did drink maybe twice but still...

I seriously want it.

Any help?