Trust your coach. You trusted them to get you this far, so trust them to get you to your goal.
Generally speaking (since others will be going through similar disruptions), the body prefers a routine. So if you normally run every other day, then aim for the race to occur with a day off prior. If you run six days per week and hard days on 1, 3 and 6, then plan for the race to occur on one of those days as well. So ideally, the race day falls in the normal routine. But training/racing doesn't always go ideally.
The reason you want to keep the routine has to do with muscle tension. The body gets used to a similar tension level leading into hard days and when you alter that to be too little or too much is when "things don't feel right". So if you normally would have run on Tuesday, and go from Saturday to Friday between runs, then you'll likely have an "unusual" amount of muscle tension compared to your normal routine. This is going to make you feel "off" or "flat". So to fix that, you're encouraged to run on Wed/Thurs to try and get something in the legs to help build that tension back up to your normal levels. It won't be that your fitness has fallen, but just that the legs won't feel right. You don't need much though. Even 20-30 min is plenty to invigorate them. Through trial and error runners can find their ideal pattern such that the tension is in the right place on race day. Some find an off day before a race is best, some find strides the day prior is best, some just do an easy day. Predominately this is because of the muscles fiber concentration in the leg muscle, but we're not all the same here so that's why trial and error is best on what is best proceeding the race.
Now some things to consider leading into Disney races. Disney races aren't usual because they are generally a vacation destination and involve a lot of walking outside of normal walking loads. So while walking is not running, it does add some stress to the legs. So could you get away with just normal Disney vacation activities and not run? Probably to an extent. Which leads to the second part, what is the goal? If your goal is PR level fitness, then you'll want to do that mid-week run to get your legs in a good place. If the goal is just to be in good shape and you're ok with the legs being a touch off peak/sharpness, then you'll be fine with the Disney vacation legs.
Hope that helps!
