I was so worried about altitude illness before I left home, so I prepared myself with altitude powder 3 days before I went. No problems at all. Yes, you will feel winded climbing the steps to the footbridge to the peak but that’s just because you are so high up. Take your time. Bring gloves, winter coat and boots because there is snow. It snowed the day before we got there so it was fresh powder. I was surprised to see people in shorts, and tennis shoes. You can rent coats and boots if necessary. The gondola rides up were amazing. Then the ski lift ride to base camp is quite an experience. But nothing is more breathtaking than the walk to the peak. I felt so proud of myself and so overwhelmed with the beauty before me that I cried. Yup, I admit I had tears. The clouds were just perfect enough to see the Matterhorn in the distance. Wow. I rode the roller coaster and went as slow as possible, because I am a chicken. It was a great day at Glacier 3000. I’m so glad we went.