What are "tardeadas" in Mexico??

Question

...i heard they are like younger people clubs but idk

Answer 1

Mostly its places where young people gather to hang out.  Most can't drink or anything, so its more like parties or dance clubs.

Answer 2

Is just like going to a disco but with more clothes, earlier 4-9pm, no alcohol, kids between 13-15

16 year olds and older go to actual discos if they don't look that young.

Answer 3

You exactly right. They can also be parties. Tarde means late.