Have a friend whose inlaws are going to WDW in a couple of months. They are insisting they bring the triple front to back stroller. My friend says it won't fit on the buses and monorails. Inlaws say they can use the handicap car on the monorail. I already informed them that my mom uses an ECV and I can't tell them the number of times they booted strollers out of that car for my mom and her ECV. So what should the inlaws expect for access with this triplet stroller? Any problems? I suggested one double and one single.