I was fortunate enough to get a ticket for the Rocky Mountain National Park tour. It was sunny in the morning and, in typical Rocky Mountain fashion, the weather turned in the afternoon--we had beautiful fluffy snowflakes to enjoy! Our guide was very knowledgeable and was quick to pint out the elk, mule deer, red-tailed hawks, and various tracks in the snow. He was kind enough to pull over (when there was a safe place to do so) so we could shoot photos as we came across wildlife. He did an excellent job of explaining the ecosystems, too. I would highly recommend this--and ask for Will as your guide :)