Two of the five South players opted to open the South hand 2
♥. I can understand why
          not -- it violates a few principles of preemptive bidding,
          like having more high-card points outside the suit than in. It
          does offer about 4-1/2 playing tricks, and the heart suit is
          rich with good spot cards.
          
          Of the two who opened the South hand in hearts, only one North
          player took the jump to 4♥
              and found the successful sacrifice.
              
              Four tables played in 3NT making four or five, one played
              in 4♥X down one for a top board. 
      
      Looking forward to spending the weekend playing bridge with all of
      our friends!
      
      Best regards,
      Mojo
      -- 
      Morris Jones, Monrovia, CA
      
BridgeMojo
      Old Town Sidewalk Astronomers
      Mojo's Blog