We just got back from our May 11 My Way Alpine tour. It was exceptional. We had varied weather -rain, snow, and cold in the first part of the trip and then it got warmer and warmer. I did not have cool clothes for the end of the trip and I regretted that. My Keen walking tennis shoes were all I needed to get anywhere on the hiking trails. If you are more adventurous, you may need sturdier shoes. I was a low level hiker, but walked 15k to 20k steps daily. If you are going to do the castle tours in Fussen, I suggest you pick one castle and do it. You can hike around the outside of the one you don't choose. It was very very crowded in early May, so I am sure it will be crazy when you go. And hot. Many of our hotels did not have AC, but it was not an issue until we left the tour and hit Annecy and Geneva at 87 degree days. Also, I got pretty sick on the tour. I ended up doing an online Medical appt and easily picked up antibiotics at a local pharmacy. Disappointing, but it did not ruin my trip overall. Be prepared for a beauty overload. The scenery was breathtaking -even out of the bus windows. I can't wait to go again!