True, but it's not "wriggle room". The Code only requires "minimum" widths: you can make the corridor as wide as you like, and it's no secret or hidden "hack". The Code simply requires the minimum width for a specific occupancy, with a baseline occupant load, then requires that the corridor be widened by a specific width for each additional occupant utilizing that means of egress (based on the maximum possible occupant load).
Having said all of that and not knowing what the design occupant load is for any specific resort, building, or floor, it's impossible to determine how much additional corridor width/capacity was provided by the original architects at each resort. It's not an unfair assumption that some additional width was provided beyond the code-required minimums, and that is to be expected, but no one is not going to go overboard on designing overly wide corridors when they take away rentable space within the building footprint (corridors don't make money, so there is a balance between the two, leaning towards the side of safety of course). They base their design on Code minimums, plus reasonable expectations with an additional safety factor baked in.
With some of the older resorts, built before the proliferation of
ECV's, it's an additional capacity that likely wouldn't have been envisioned at the time of original design. ECV's seem to be getting bigger as well, and how would the designer anticipate the orientation of a parked
scooter? Is it parallel to the wall, perpendicular (because people will do what people do), parked side-by-side? Some of the bigger ECV's are now up to 50" long and 30" wide. Put a couple of those in the corridor close to each other (because they're going to be grouped around wall receptacles) and you know no one added an extra 5 or 6 feet to the corridor design width in anticipation of that.