Are you dead set on going to WDW? Are there other places you would consider that you would enjoy that would be a little less challenging? (You might just love theme parks and really want to go. Or maybe it's a family trip that others are really looking forward to, that you want to be part of. In that case, OK I get it. It's definitely your choice and you are doing the preparation and planning, so good for you.)
But my husband, for example, who has not been diagnosed with claustrophobia or anything like that just doesn't care for crowds, prefers to stay home vs. travel to crowded theme parks, prefers to visit wide open spaces out west vs. crowded cities. We all love the west, so tend to do a lot of western USA vacations that he will enjoy too. And these days with popular national parks being overrun with people we are picking slightly less popular places or going slightly off season. And for our occasional theme park / WDW fix, DH stays home.
This might not be the same thing at all. I didn't know this, till I did a particular hiking trail in Sedona, AZ, and I found out that I have a fear of heights. I'm fine on coaster, drop rides, anything with man made constraints. But on a pretty easy hike to Devil's bridge, there is this reasonably wide (maybe even 10 feet wide in the most narrow area) where if someone did something stupid, they would fall to their death. I didn't go out on it, sat to the side, and my heart was pounding all of a sudden and kept pounding till everyone in my family was off the bridge part. Photo below. I prefer hike where if you did something stupid, you would just break a leg. It was wild, the physical reaction that I had. All in my party are adults, and it's perfectly reasonable for them to do this hike. What I do, though, is if this is the hike they are doing, I just do something else on my own and meet up with them later. Problem solved.
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