If someone is expecting the possibility of a service cart, and instead there is an
ECV, added to the enormous list of times that person is going to find something where they did not plan to find something that day, I don't see it as an onerous burden.
There's 2 distinct issues.
While there is almost always room in the room to put an ECV, it is often the case that there are not appropriate AC receptacles near enough to those spaces within the room. This has been the number one reason my party has been directed to park a powerchair outside the room if doing so is convenient. Other options being, moving furniture or running power cords. In my experience, there's usually only one outlet in the room that is rated for the 15amp circuit my friend's charger requires and it's the bathroom GFCI outlet. A safety outlet that's prone to trip with cords longer than 8 feet; which sometimes puts a 150lb. wheelchair right in front of the exit.
The other issue is, as you say, getting it through the door. People with mobility issues come in all sorts. If one can walk a little, then getting through a door on one's feet allows them to use their body weight against the resistance of the door. Maybe enough so to get in and out the door, maybe not enough to pin the door all the way open while also positioning a block of rubber at ankle height... twice for every time they wish to leave or enter their room.
And while the actual risk of being injured in a modern resort hotel fire is about the same as spotting a sasquatch, being able to leave ones room at will for a number of other reasons is still a serious concern.
People certainly do have issues with service dogs. Some people have serious, and sometimes even legitimate issues with service dogs. It has little to do with the size or even the behavior of the dog. If someone walked into a nice restaurant with a well behaved pet German Shepherd there would be some there who legit didn't care, some who think it's not really the thing to do but not worth making a stink over, and you KNOW there's going to be at least a few people there who will complain about it until the pet owner is sent on his way. If this wasn't the case, we never would have needed a law requiring businesses allow service dogs.
I'm sorry that I came across as suggesting you were impolite, that wasn't my intention. I was responding to your position that, "I was raised to believe that your problems, no matter what they are, are your own and you don't visit those on other people." Which seemed to condemn the disabled subjects of this topic who were making their problem your problem when they put their mobility device in the hall for you to see.
If you heard someone complain about handicapped people needing strangers to hold doors for them so they could get a wheelchair through, what would your opinion of that person be? That their problems getting through that door shouldn't be your problem?
But their problems getting through a hotel door are their problems, even when the only imposition on you is having to walk by that same chair unoccupied. Something you'll be doing a thousand times once you're inside the park.
What if a meteor strike is incoming but it's raining and all those umbrellas are keeping you from seeing where it will land ...... What if there was a unicorn attack and...
The life-death risk of needing to get people in and out of hospital rooms is significant and ever-present. The risk of an uncontained fire at any modern resort hotel is negligible. If it weren't, housekeeping would not be allowed to leave large rolling carts unattended in those same hallways. But say your lottery number comes up and there's a fire and everyone needs to evacuate... That ECV is there BECAUSE a human being who needs it is 20 feet away at that same exact moment. It's not going to stay there.
Assuming there is ample room left over for egress, any situation in which a wheelchair parked in a hallway, presents an actual significant risk to someone else's safety is going to be contrived. If your position is that we shouldn't have to tolerate ANY additional risk to accommodate the needs of disabled people, keep in mind that asthma and dog allergies present a real risk from service dogs to some people.