MB is Magical Beginnings, a program where you 'sell' your 1st years points back to Disney for $10/ point at VWL or $13/point at Vero or Hilton Head.
BCV is Beach Club Villas, a soon to open DVC resort next to Disney's Beach Club.
MB is Magical Beginnings.
It is a program where Disney essentially buys back your first years allotment of points ($10 a point for VWL and $13 HHI and Vero Beach). The advantage is initial savings, the disadvandage is delayed gratification.
BCV is Beach Club Villa's.
Newest DVC expected to open September '02 adjacent to the Beach Club resort.