This is a subject that just plain has no set answer
There is a set answer. If you either write to Guest services, or ask the hotel manager (not the maid service manager..they don't get to decide what is allowed to be done in hotel rooms) you will get the official answer. I don't think you will like the official answer. I have to say that I am very surprised that a Disney hotel manager said it was ok, since they have to follow fire codes, and that was the reason I was given when I wrote guest services. That manager could have been fired for giving you permission.
IMO there is a big difference between hotels set up, with counters, ground falut interupter plugs, etc, than a motel room meant for sleeping. When food is cooked in rooms (and it may be that you wouldn't cook anything YOU wouldn't want to smell, but I don't want to smell grits) the smell gets into the bedspreads, curtains etc, which means when you leave, I get to "enjoy" the smell, or it comes in through the vent. I always ask for (and get) a non smoking building, and even then I have to smell the smoke sucked into my vent...I'd really rather not smell it in the room where I sleep. I use a vent at home to keep smells out, and never rent at hotels that have cooking in the rooms (which is prob where you should rent).
It's not about an opinion, it's about what the manager/owner of the hotel allows. The values and mods have a place for you to cook and eat your food. You even have enough chairs to go around for a family, and if you spill it on the floor, it won't affect the next guest. Byt he way..that iron does have a turn off, and if the tub overflows (which is hard, since it has an overflow hole in it) I can guarantee, you won't drown. Heck, you won't even smell it.