My husband and I took a cruise to Alaska and we decided to go to Mendenhall Glacier. Instead of booking the excursion through the cruise line the cruise excursions didn't spend much time there, we booked the shuttle service and set off on our own. I'm glad we did. Not only was the cost extremely reasonable, but it felt more like a tour then just a bus ride. Our driver a teacher from, I believe TX, told us stories of the history of Juneau during the 20-30 minute drive. When we were ready to leave the park and head back to town, the bus stop was jam packed. We figured, since the shuttle runs every 30 minutes, we would be waiting for the next. Nope. There happened to be 2 shuttles in the park. The 2nd shuttle wasn't scheduled to stop, but since he saw that there were so many people waiting, he would take a busload back to town. I would definitely recommend using the service if you want to visit Mendenhall.