Peru 8 Days: Llama or Alpaca

I was wondering the difference between these two animals, and i thought that maybe i should get it figured out before I go and see them in their homeland.
Llamas on the left, alpacas on the right.
Llamas are bigger- longer neck and legs. Alpaca have smaller ears as well.
The llamas are used for transportation and work because of their size. Alpaca stay home and grow the fleece.