How to smuggle booze? (on to cruise)

[testaaja]

So I'm going to a student cruise this weekend. The thing is that they might search you and take your bottles away. I'm not sure what's the best way to smuggle these through. Do you guys know any advanced techniques?

And no, I won't be smuggling anything in my ass.

Edit to clarify:
There are bars and so on but I don't want to spend 300 euros to get drunk. Tax free shop will be opened the next morning so I won't even be able to buy cheap beer. I can't buy liquor from the shop because I'm under 20 ([censored] laws).