Here some things to know before to go to Cancun:

Which formalities are necessary to fill?
Have a passport validates 6 months after your date of return, but you will need a visa if you stay more than 90 days.
It does not need to make a vaccination.

Which is the budget to go to Cancun?
For 1 week it is necessary to have a budget of 2000 EUR. (2500 USD)
For 2 weeks it is necessary to have a budget of 3000 EUR. (3750 USD)
With these budgets you will be able everything! (flight, hotel, alcohol, food, clubs and some souvenirs)
These are the budgets from Europe. From USA or Canada it's much more cheaper.

Which are the periods for Spring and Summer Breaks?
Spring Break: from February to April.
Hot time in March.
Summer Break: from May to September.
Hot time in May and June.

Which temperature in Cancun?
All year long the temperature is 30°C! (85°F)

Which is the rain season?
The rain season can last from August to October.
But they are only short downpours in general.

How many clubs are there in Cancun?
There are more than 10 clubs in Cancun

From which age can we go to the Cancun's clubs?
From 18 years normally, but according to certain people, you can even come if you are 15 or 16 years old.

How much an entry and alcohol cost to the clubs?
The entries cost from 30 to 35 USD (25 to 29 EUR).
The majority of the clubs propose bracelets with entry Open Bar.

Where can you change your money?
If you have to change money go to the downtown because the rate of exchange is more interesting than in the hotel zone.
Always have cash with you (at least 20 USD and some Pesos for the small things like the bus).

How are food and alcohol in Cancun?
In our hotel food was not brilliant. A council, eat to Burger King lol.
On the other hand alcohol is brilliant especially when you have Open Bars (clubs and hotel).

Is the water drinkable in Cancun?
For water prefer that one in bottle even if water in the hotel zone is in theory drinkable.