My response is for @BurleyGirl who has a vacation day issue for 2020. One possible solution is to pick a disney half marathon that is not on marathon weekend. The other race weekends hold the half marathons on Sunday since they are the longest distance. Marathon weekend is the only one with Saturday HM. You could technically fly in early AM on Sat, go to the expo, and race Sunday morning. Fly out that evening or late afternoon. It's a whirlwind, but do-able.