Michael,
My wife and I, mid-30s, are planning a getaway week (from our kids 3 and 5) for the first week of June. We’ve booked cheap round-trip flights from Cleveland (900’ above sea level) to Las Vegas. I scored permits to overnight on Mount Whitney June 8-9. Our itinerary includes Tuolumne Meadows in Yosemite, hike to Cathedral Lakes (or beyond), backpack over Clouds Rest, camp near junction with John Muir Trail. Half Dome early a.m., descend Mist Trail to Yosemite Valley. Free Day in Yosemite (North Rim dayhike?). Summit Whitney.