First Time Mommy Expecting Twins

Aliyah • - 22 years old - happily taken 08*18*15 - expecting twin boys 04*09*17
I Wanted To Get A Few Opinions From Moms . I'm A First Time Mommy Expecting Twins March-April 2017 . My Mother In Law Thinks We Shouldn't Buy Cribs And Just Let The Babies Sleep In Separate Play Yards ... Are Play Yards Safe For Sleeping All Night ?? Opinions?