This isn't rape under the law as it stands.
Regarding claims its rape by deception - it isn't. The law on that is pretty narrow eg cases where someone is pretending to be the sexual partner of the victim, like a husband or boyfriend. Obtaining sex by deception as a general offence went out in 2003 but it still wouldn't have covered this situation.
The key case even prior to 2003 is R v Linekar (1995). A prostitute agreed to have sex for £20 and then claimed rape when the punter didn't cough up as she only agreed to sex for a particular payment. It was ruled that she consented to sex, but didn't consent to the non-payment.
It's exactly the same case here. She consented to giving 24 blow jobs, but didn't consent to not getting a holiday. It's breach of contract, not rape.
Also, legally, drunken consent is still consent. It's a very long established legal principle. It's rape when someone is so intoxicated that they haven't got the capacity to consent, but that's situations where someone is drunk to the point of unconsciousness or being unable to communicate. Being drunk to the point where you've lost your inhibitions and done something you normally wouldn't have is not rape.
Can you tell I've just finished my criminal law exams? 