I know Cancun like I know my own back yard.
You don't need to bring your juice with you. There is plenty of juice in Cancun. Winny won't be a problem. The ttokkyo distributor for the state of Q. Roo is in Cancun.
Email me or pm me if you need any help.
Hoover,
Your were not shopping at the right place. You were shopping in the hotel zone. Everything is expensive there. It is a tourist trap. You have to go to the downtown area for your drug shopping.