Buying cigarettes at night

I just went down to buy a pack of cigarettes. It's past midnight and yet I could choose from 3 different bars within 30 sec walking distance... and I live in a quiet neighborhood, believe me. The thing is that as I walked there, this thought came to my mind: I could just get there and ask for a couple of beers and several shots of tequila, and get completely drunk. That would be legal. However, it's not legal to get a nice joint of nice pot. Ah, Amsterdam, mon amour.