The scene is familiar: You are in Cancun or some other party hotspot and are entering a bar or club who advertise "pay entry fee and drink as much as you want" or similar. You pay entry fee, get a wristband slapped on your wrist and then you are off to drink as much as you can? Simple right? But, watch out..

selected drinks
Some places only allow you to drink selected drinks when offering these kind of deals. What's the point in giving away Cristal to people who can not appreciate it right?

Only certain parts of the bar
You may have to go up 2 floors and in a little corner is the bar where you can drink all you want.

Inferior quality
The kind of drinks you are allowed to drink may be very cheap local drinks. This can make for a very bad hangover..