This scramble gets 3 stars for quality.  Meet at St David Church @ 5 am on Saturday.  I can take four passengers in my truck.  Three hour drive to trail head.  Two hour hike to lake camping.  Set up and climb Mt Marriott.  Return for diner, eat, sleep  Next day get up when sun gets warm, explore more of area, visit Wendy Thompson hut, swim (?) pack up and hike out.  Swim @ Lillooet Lake if ti's warm enough.  Dinner @ Mile 1 or Squamish.