Going to Chamonix March 13-19th and trying to figure out if I need to get lift tickets ahead of time, and should I get the unlimited pass. My wife and I are expert skiers, but have limited experience in avalanche risk areas. We plan to ski 4-5 days and will likely hire a guide for one day for Valle Blanche or another off piste skiing. So, which pass option should we go for, and do we need to book a guide well in advance or can we wait until we are in Chamonix to book. thanks!