Last year, we received the recommendation to arrive to Denver a day early to allow our bodies to adjust to the altitude. Unfortunately, notice was sent after our travel plans were set. Can you post those recommendations to provide justification to our travel department?
Whenever I travel to Colorado to visit my sister in Breckenridge (not far from Keystone), I always make sure to drink plenty of water to stay hydrated. It's important to do this days beforehand and continue to stay hydrated while there.