One is the extra time and efforts that goes into a winter wedding, and that includes transportation. More than once this winter the roads have closed or have been extremely slow going. So, if you're working with vendors that don't live in the mountains, it would be good to ask what their travel plans are.
Simply put, the weekends are busy in the mountains. You have skier traffic heading into the hills starting early Friday and traffic peaks between 4 PM and 7 PM on Saturdays and Sundays.
With enough planning, the wedding will go as planned, but definitely have a back up plan for vendors and guests traveling to the event on the day of. Please contact me to learn more about planning a destination wedding in Breckenridge, Vail or anywhere up here in the mountains!