Do not exaggerate:

That is to say, if I poured champagne to a girl and then we had sex, is it now called rape? Feminists are feminists.

If she was not going to give you soberly, and you poured her in champagne silently, and then fucked - it means you raped her. If the same champagne drunk to the state of "in wood" - the same. What and how much people who have agreed to have sex with each other drink together, the feminist does not care.