Yes, I have an addiction to Weber's Drive In too! Love it.
** some things to note: DO NOT go to the one in Brooklawn. Do go to the one in Stratford or Pennsauken. <--- which is my favorite.
They're closed on Mondays & the one in Pennsauken occasionally has an Elvis impersonator hanging out in the parking lot with a boombox that blares... you guessed it, Elvis songs! The Pennsauken and Stratford ones are very clean and have awesome service. Go there today and get your Root Beer!