By far the best way to experience GC if you're going for a day trip. The 6 am sharp departure time wasn't something I was happy about but now, after this fantastic experience, it fades away to a minor necessity. We were greeted by our fantastic guide, Eric, who just made the entire experience a 5+. He was knowledgable, informative, yet not overbearing. He was thoughtful to each member of our group and accommodated our personalities to create a harmonious excursion. Even after the long day, first thing I told my friends who didn't join us was that if they want to go next trip, I'm in! Sooooo worth it!