I certainly don't want to sound negative, but my suggestion would be if at all possible, move your trip up. I am an avid photographer and most likely have been to most if not all the parks you are planning on visiting multiple times. June is a terrible month for national park visits. The primary reason I say that is because the kids are out of school and the parks are very crowded with families (like Yogi said "nobody goes there anymore, it's too crowded"). May is a much better choice. You will have easier access to everything you want to visit and if wildlife viewing is on your agenda (Glacier, Yellowstone, Tetons, etc.) you have greatly increased odds of actually seeing an animal without having to fight for a view. Once the crowds arrive everythng gets hectic. The Grand Canyon, Bryce, Zion, Canyonlands, Moab, etc. are all swamped in June because July and August are just too hot. Even with Yosemite limiting access only to those with prior reservations the park gets very crowded. Just my two cents worth and if your trip can't be rescheduled I hope you have a wonderful time.
