We are a family 4 visiting Keystone the first week of February 2014. Was hoping to hire a guide for a half or full day to familiarize us with the ins and outs of the terrain. My boys are 6 and 10 and are advanced level 2 and level 3 ridersrespectively. It is not that we wouldn't benefit from lessons, but really looking for more of a guide. Anyway we would like to find the appropriate off the beaten path terrain . Any recomendations on guide service through the resort or outside sources.